/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var ChessPiece = Container.expand(function (type, color, row, col) {
	var self = Container.call(this);
	self.pieceType = type;
	self.pieceColor = color;
	self.row = row;
	self.col = col;
	self.hasMoved = false;
	self.poisonTurns = 0;
	self.poisonEffect = null;
	self.poisonCounterText = null;
	self.snakeMovesThisTurn = 0;
	self.maxSnakeMoves = 3;
	self.snakeLastMoveDirection = null; // Track last move direction for straight ahead requirement
	self.snakeOnCooldown = false; // Prevent consecutive snake usage
	self.princessEliminationMode = false; // Track if princess is in elimination mode
	self.princessTargetsSelected = 0; // Track how many targets princess has selected
	self.princessSelectedTargets = []; // Store selected targets for elimination
	self.summonerMoveCount = 0; // Track moves for summoner ability
	self.hasSummoned = false; // Track if summoner has summoned this cycle
	var assetName = color + type.charAt(0).toUpperCase() + type.slice(1);
	var pieceGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.updatePosition = function (animate) {
		var targetX = boardStartX + self.col * squareSize + squareSize / 2;
		var targetY = boardStartY + self.row * squareSize + squareSize / 2;
		if (animate && (self.x !== targetX || self.y !== targetY)) {
			// Add subtle bounce animation for piece movement
			tween(self, {
				x: targetX,
				y: targetY,
				scaleX: 1.1,
				scaleY: 1.1
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					// Bounce back to normal size
					tween(self, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 150,
						easing: tween.bounceOut
					});
				}
			});
		} else {
			self.x = targetX;
			self.y = targetY;
		}
	};
	self.canMoveTo = function (targetRow, targetCol) {
		// Poisoned pieces cannot move
		if (self.poisonTurns > 0) {
			return false;
		}
		if (targetRow < 0 || targetRow > 7 || targetCol < 0 || targetCol > 15) {
			return false;
		}
		var targetPiece = getPieceAt(targetRow, targetCol);
		if (targetPiece && targetPiece.pieceColor === self.pieceColor) {
			return false;
		}
		switch (self.pieceType) {
			case 'pawn':
				return self.canPawnMove(targetRow, targetCol);
			case 'rook':
				return self.canRookMove(targetRow, targetCol);
			case 'knight':
				return self.canKnightMove(targetRow, targetCol);
			case 'bishop':
				return self.canBishopMove(targetRow, targetCol);
			case 'queen':
				// Check stamina for queen moves
				if (self.pieceColor === 'white' && staminaPoints <= 0) {
					return false;
				}
				if (self.pieceColor === 'black' && aiStaminaPoints <= 0) {
					return false;
				}
				return self.canQueenMove(targetRow, targetCol);
			case 'princess':
				return self.canPrincessMove(targetRow, targetCol);
			case 'king':
				return self.canKingMove(targetRow, targetCol);
			case 'snake':
				// Check stamina for snake moves
				if (self.pieceColor === 'white' && staminaPoints <= 0) {
					return false;
				}
				if (self.pieceColor === 'black' && aiStaminaPoints <= 0) {
					return false;
				}
				return self.canSnakeMove(targetRow, targetCol);
			case 'jester':
				return self.canJesterMove(targetRow, targetCol);
			case 'summoner':
				return self.canSummonerMove(targetRow, targetCol);
		}
		return false;
	};
	self.canPawnMove = function (targetRow, targetCol) {
		var direction = self.pieceColor === 'white' ? -1 : 1;
		var startRow = self.pieceColor === 'white' ? 6 : 1;
		if (targetCol === self.col) {
			if (targetRow === self.row + direction && !getPieceAt(targetRow, targetCol)) {
				return true;
			}
			if (self.row === startRow && targetRow === self.row + 2 * direction && !getPieceAt(targetRow, targetCol)) {
				// Check if path is clear for 2-square pawn move
				return isPathClear(self.row, self.col, targetRow, targetCol);
			}
		} else if (Math.abs(targetCol - self.col) === 1 && targetRow === self.row + direction) {
			var targetPiece = getPieceAt(targetRow, targetCol);
			if (targetPiece && targetPiece.pieceColor !== self.pieceColor) {
				return true;
			}
		}
		return false;
	};
	self.canRookMove = function (targetRow, targetCol) {
		if (self.row !== targetRow && self.col !== targetCol) {
			return false;
		}
		return isPathClear(self.row, self.col, targetRow, targetCol);
	};
	self.canKnightMove = function (targetRow, targetCol) {
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		return rowDiff === 2 && colDiff === 1 || rowDiff === 1 && colDiff === 2;
	};
	self.canBishopMove = function (targetRow, targetCol) {
		if (Math.abs(targetRow - self.row) !== Math.abs(targetCol - self.col)) {
			return false;
		}
		return isPathClear(self.row, self.col, targetRow, targetCol);
	};
	self.canPrincessMove = function (targetRow, targetCol) {
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Princess can move exactly 2 squares straight (horizontal or vertical only)
		if (rowDiff === 2 && colDiff === 0 || rowDiff === 0 && colDiff === 2) {
			// Cannot jump over pieces - path must be clear
			return isPathClear(self.row, self.col, targetRow, targetCol);
		}
		// Princess can move 1 square straight for positioning
		if (rowDiff === 1 && colDiff === 0 || rowDiff === 0 && colDiff === 1) {
			return true;
		}
		return false;
	};
	self.canQueenMove = function (targetRow, targetCol) {
		// Queen moves like both rook and bishop (any distance in straight lines or diagonals)
		if (self.row === targetRow || self.col === targetCol) {
			// Rook-like movement (horizontal or vertical)
			return isPathClear(self.row, self.col, targetRow, targetCol);
		}
		if (Math.abs(targetRow - self.row) === Math.abs(targetCol - self.col)) {
			// Bishop-like movement (diagonal)
			return isPathClear(self.row, self.col, targetRow, targetCol);
		}
		return false;
	};
	self.canKingMove = function (targetRow, targetCol) {
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Normal king move (one square in any direction)
		if (rowDiff <= 1 && colDiff <= 1) {
			// Check if king would be safe at target position
			return isKingSafeAt(self, targetRow, targetCol);
		}
		// Castling logic (king moves 2 squares horizontally)
		if (!self.hasMoved && rowDiff === 0 && colDiff === 2) {
			// Check if castling is possible
			if (targetCol > self.col) {
				// King-side castling (right)
				var rook = getPieceAt(self.row, 15); // Rightmost rook
				if (rook && rook.pieceType === 'rook' && !rook.hasMoved && rook.pieceColor === self.pieceColor) {
					// Check if path is clear and king doesn't move through check
					for (var col = self.col + 1; col < 15; col++) {
						if (getPieceAt(self.row, col) || !isKingSafeAt(self, self.row, col)) {
							return false;
						}
					}
					return isKingSafeAt(self, targetRow, targetCol);
				}
			} else {
				// Queen-side castling (left)
				var rook = getPieceAt(self.row, 0); // Leftmost rook
				if (rook && rook.pieceType === 'rook' && !rook.hasMoved && rook.pieceColor === self.pieceColor) {
					// Check if path is clear and king doesn't move through check
					for (var col = self.col - 1; col > 0; col--) {
						if (getPieceAt(self.row, col) || !isKingSafeAt(self, self.row, col)) {
							return false;
						}
					}
					return isKingSafeAt(self, targetRow, targetCol);
				}
			}
		}
		return false;
	};
	self.applyPoison = function (turns) {
		self.poisonTurns = turns;
		self.showPoisonEffect();
	};
	self.showPoisonEffect = function () {
		if (self.poisonEffect) {
			self.poisonEffect.destroy();
			self.poisonEffect = null;
		}
		if (self.poisonCounterText) {
			self.poisonCounterText.destroy();
			self.poisonCounterText = null;
		}
		if (self.poisonTurns > 0) {
			self.poisonEffect = self.attachAsset('poisonEffect', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			self.poisonEffect.x = 30;
			self.poisonEffect.y = -30;
			self.poisonCounterText = new Text2(self.poisonTurns.toString(), {
				size: 24,
				fill: 0xFFFFFF
			});
			self.poisonCounterText.anchor.set(0.5, 0.5);
			self.poisonCounterText.x = 30;
			self.poisonCounterText.y = -30;
			self.addChild(self.poisonCounterText);
			// Tint piece red when poisoned
			if (pieceGraphics && !pieceGraphics.destroyed) {
				tween(pieceGraphics, {
					tint: 0xff6666
				}, {
					duration: 300,
					easing: tween.easeOut
				});
			}
		} else {
			// Remove red tint when poison wears off
			if (pieceGraphics && !pieceGraphics.destroyed) {
				tween(pieceGraphics, {
					tint: 0xffffff
				}, {
					duration: 300,
					easing: tween.easeOut
				});
			}
		}
	};
	self.reducePoisonTurns = function () {
		if (self.poisonTurns > 0) {
			self.poisonTurns--;
			self.showPoisonEffect();
		}
	};
	self.canJesterMove = function (targetRow, targetCol) {
		// Jester moves exactly 2 squares in any direction (like checker piece)
		var rowDiff = targetRow - self.row;
		var colDiff = targetCol - self.col;
		var absRowDiff = Math.abs(rowDiff);
		var absColDiff = Math.abs(colDiff);
		// Must move exactly 2 squares in any direction
		if (Math.max(absRowDiff, absColDiff) !== 2) {
			return false;
		}
		// Check if move is in valid direction (straight or diagonal, 2 squares)
		var isValidDirection = false;
		if (absRowDiff === 2 && absColDiff === 0 ||
		// Vertical 2 squares
		absRowDiff === 0 && absColDiff === 2 ||
		// Horizontal 2 squares
		absRowDiff === 2 && absColDiff === 2) {
			// Diagonal 2 squares
			isValidDirection = true;
		}
		if (!isValidDirection) {
			return false;
		}
		// Calculate middle square position
		var middleRow = self.row + (rowDiff > 0 ? 1 : rowDiff < 0 ? -1 : 0);
		var middleCol = self.col + (colDiff > 0 ? 1 : colDiff < 0 ? -1 : 0);
		// Check if middle square is within bounds
		if (middleRow < 0 || middleRow > 7 || middleCol < 0 || middleCol > 15) {
			return false;
		}
		var middlePiece = getPieceAt(middleRow, middleCol);
		var targetPiece = getPieceAt(targetRow, targetCol);
		// Jester cannot land on an occupied square - target square must always be empty
		// Also jester cannot capture the king
		if (targetPiece) {
			if (targetPiece.pieceType === 'king') {
				return false; // Jester cannot capture the king
			}
			return false; // Cannot capture pieces on destination square
		}
		// Normal move: middle square empty, target square empty
		if (!middlePiece) {
			return true; // Can move to empty square through empty middle
		}
		// Jump capture move: middle square has enemy piece, target square must be empty (already checked above)
		if (middlePiece.pieceColor !== self.pieceColor) {
			return true; // Can jump over enemy piece to empty square
		}
		// Can jump over own pawns
		if (middlePiece.pieceColor === self.pieceColor && middlePiece.pieceType === 'pawn') {
			return true; // Can jump over own pawns to empty square
		}
		return false; // Can't jump over other own pieces
	};
	self.canSummonerMove = function (targetRow, targetCol) {
		// Summoner can only move 1 square in any direction (like a king)
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Summoner can move exactly 1 square in any direction (horizontal, vertical, or diagonal)
		if (rowDiff <= 1 && colDiff <= 1 && (rowDiff > 0 || colDiff > 0)) {
			return true;
		}
		return false;
	};
	self.canSnakeMove = function (targetRow, targetCol) {
		// Check if snake is on cooldown
		if (self.snakeOnCooldown) {
			return false;
		}
		var rowDiff = targetRow - self.row;
		var colDiff = targetCol - self.col;
		var distance = Math.max(Math.abs(rowDiff), Math.abs(colDiff));
		// Check if poisoning will occur
		var willPoison = false;
		var poisonPositions = [{
			row: self.row - 1,
			col: self.col - 1
		}, {
			row: self.row - 1,
			col: self.col
		}, {
			row: self.row - 1,
			col: self.col + 1
		}, {
			row: self.row,
			col: self.col - 1
		}, {
			row: self.row,
			col: self.col + 1
		}, {
			row: self.row + 1,
			col: self.col - 1
		}, {
			row: self.row + 1,
			col: self.col
		}, {
			row: self.row + 1,
			col: self.col + 1
		}];
		for (var i = 0; i < poisonPositions.length; i++) {
			var pos = poisonPositions[i];
			if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
				var pieceAtPos = getPieceAt(pos.row, pos.col);
				if (pieceAtPos && pieceAtPos.pieceColor !== self.pieceColor) {
					willPoison = true;
					break;
				}
			}
		}
		// Snake can only move exactly 1 square
		if (distance !== 1) {
			return false;
		}
		// Check if the path is clear (no jumping over pieces)
		if (!isPathClear(self.row, self.col, targetRow, targetCol)) {
			return false;
		}
		// First move: 1 square in any direction (straight lines only)
		if (self.snakeMovesThisTurn === 0) {
			// Must be straight line movement (horizontal, vertical, or diagonal)
			if (rowDiff === 0 || colDiff === 0 || Math.abs(rowDiff) === Math.abs(colDiff)) {
				return true;
			}
			return false;
		}
		// Second move: 1 square diagonally in any direction
		if (self.snakeMovesThisTurn === 1) {
			// Must be diagonal movement
			if (Math.abs(rowDiff) === Math.abs(colDiff) && Math.abs(rowDiff) === 1) {
				return true;
			}
			return false;
		}
		// Third move: 1 square in any direction - only if not poisoning
		if (self.snakeMovesThisTurn === 2 && !willPoison) {
			// Can move to any adjacent square (any direction)
			return true;
		}
		return false;
	};
	self.executeSummon = function () {
		// Check if summoner can summon (moved 3 times and not already summoned)
		if (self.summonerMoveCount < 3 || self.hasSummoned) return;
		var summonPositions = [
		// Orthogonal squares first: up, right, down, left
		{
			row: self.row - 1,
			col: self.col
		},
		// up
		{
			row: self.row,
			col: self.col + 1
		},
		// right  
		{
			row: self.row + 1,
			col: self.col
		},
		// down
		{
			row: self.row,
			col: self.col - 1
		},
		// left
		// Diagonal squares: up-right, down-right, down-left, up-left
		{
			row: self.row - 1,
			col: self.col + 1
		},
		// up-right
		{
			row: self.row + 1,
			col: self.col + 1
		},
		// down-right
		{
			row: self.row + 1,
			col: self.col - 1
		},
		// down-left
		{
			row: self.row - 1,
			col: self.col - 1
		} // up-left
		];
		var summonedCount = 0;
		var maxSummons = 2;
		for (var i = 0; i < summonPositions.length && summonedCount < maxSummons; i++) {
			var pos = summonPositions[i];
			// Check if position is valid and empty
			if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
				if (!getPieceAt(pos.row, pos.col)) {
					// Summon pawn at this position
					var newPawn = new ChessPiece('pawn', self.pieceColor, pos.row, pos.col);
					pieces.push(newPawn);
					gameBoard[pos.row][pos.col] = newPawn;
					game.addChild(newPawn);
					newPawn.updatePosition(true);
					summonedCount++;
					// Create summoning effect
					tween(newPawn, {
						scaleX: 0.5,
						scaleY: 0.5,
						alpha: 0.5
					}, {
						duration: 0
					});
					tween(newPawn, {
						scaleX: 1.0,
						scaleY: 1.0,
						alpha: 1.0
					}, {
						duration: 600,
						easing: tween.bounceOut
					});
				}
			}
		}
		if (summonedCount > 0) {
			// Reset summoner state
			self.summonerMoveCount = 0;
			self.hasSummoned = true;
			// Show summoning message
			var summonText = new Text2('Summoner conjured ' + summonedCount + ' pawn' + (summonedCount > 1 ? 's' : '') + '!', {
				size: 50,
				fill: self.pieceColor === 'white' ? 0xFFFFFF : 0xFF0000
			});
			summonText.anchor.set(0.5, 0.5);
			summonText.x = 1024;
			summonText.y = 1200;
			summonText.alpha = 0;
			game.addChild(summonText);
			tween(summonText, {
				alpha: 1.0,
				y: summonText.y - 50
			}, {
				duration: 800,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					LK.setTimeout(function () {
						tween(summonText, {
							alpha: 0
						}, {
							duration: 500,
							onFinish: function onFinish() {
								summonText.destroy();
							}
						});
					}, 1500);
				}
			});
		}
	};
	// Add hover effects for better interactivity
	self.startHover = function () {
		tween(self, {
			scaleX: 1.05,
			scaleY: 1.05,
			y: self.y - 5
		}, {
			duration: 200,
			easing: tween.easeOut
		});
	};
	self.endHover = function () {
		tween(self, {
			scaleX: 1.0,
			scaleY: 1.0,
			y: boardStartY + self.row * squareSize + squareSize / 2
		}, {
			duration: 200,
			easing: tween.easeOut
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2D1810
});

/**** 
* Game Code
****/ 
// Sound effects
// Black pieces
// White pieces
// Chess board squares
// Game dimensions and board setup
var squareSize = 128;
var boardStartX = (2048 - squareSize * 16) / 2;
var boardStartY = (2732 - squareSize * 8) / 2 + 100;
// Game state
var currentPlayer = 'white';
var selectedPiece = null;
var validMoves = [];
var pieces = [];
var gameBoard = [];
var highlightSquares = [];
var validMoveSquares = [];
var escapeSquares = [];
var kingSquare = null;
var blackKingSquare = null;
var dragNode = null;
var gameState = 'playing'; // playing, check, checkmate, stalemate
var whiteKingLives = 4;
var blackKingLives = 4;
var currentSnakePiece = null;
var snakeMovesRemaining = 0;
var activeSnakePiece = null; // Track which specific snake is currently active
// Stamina system variables
var staminaPoints = 1; // Start with 1 point
var maxStaminaPoints = 3;
var staminaContainer = null;
var staminaBars = [];
var aiStaminaBars = [];
// Pink square overlays for Queen and Snake pieces when stamina is depleted
var queenSnakePinkSquares = [];
// AI stamina system variables
var aiStaminaPoints = 1; // AI starts with 1 point
var aiMaxStaminaPoints = 3;
// Timer variables
var whiteTimeRemaining = 60000; // 60 seconds in milliseconds
var blackTimeRemaining = 60000; // 60 seconds in milliseconds
var timerInterval = null;
var gameStartTime = null;
var currentTurnStartTime = null;
// Initialize empty board
var _loop = function _loop() {
		gameBoard[row] = [];
		for (col = 0; col < 16; col++) {
			gameBoard[row][col] = null;
		}
		// Missing function definitions for AI evaluation
		function calculatePerfectActivity(move) {
			// Simple activity calculation based on piece mobility
			return simulateMove(move, function () {
				var mobility = 0;
				for (var row = 0; row < 8; row++) {
					for (var col = 0; col < 16; col++) {
						if (move.piece.canMoveTo(row, col)) {
							mobility++;
						}
					}
				}
				return mobility;
			});
		}
		function evaluatePerfectPawnStructure(move) {
			// Simple pawn structure evaluation
			var score = 0;
			if (move.piece.pieceType === 'pawn') {
				// Bonus for pawn advancement
				var advancement = move.piece.pieceColor === 'black' ? move.toRow - move.piece.row : move.piece.row - move.toRow;
				if (advancement > 0) score += advancement * 2;
			}
			return score;
		}
		function evaluateEndgameTechnique(move) {
			// Simple endgame evaluation
			var totalPieces = pieces.length;
			if (totalPieces < 12) {
				// In endgame, centralize king and activate pieces
				var score = 0;
				if (move.piece.pieceType === 'king') {
					var centerDistance = Math.abs(move.toRow - 3.5) + Math.abs(move.toCol - 7.5);
					score += (16 - centerDistance) * 3;
				}
				return score;
			}
			return 0;
		}
		function evaluateGrandmasterPositional(move) {
			// Simple positional evaluation
			return evaluatePositionalFactors(move) + evaluatePieceCoordination(move);
		}
	},
	col;
for (var row = 0; row < 8; row++) {
	_loop();
}
// Create visual board
var boardContainer = game.addChild(new Container());
for (var row = 0; row < 8; row++) {
	for (var col = 0; col < 16; col++) {
		var isLight = (row + col) % 2 === 0;
		var square = LK.getAsset(isLight ? 'lightSquare' : 'darkSquare', {
			anchorX: 0,
			anchorY: 0
		});
		square.x = boardStartX + col * squareSize;
		square.y = boardStartY + row * squareSize;
		boardContainer.addChild(square);
	}
}
// Add coordinate system labels
var coordinateContainer = game.addChild(new Container());
// Column labels (a-p for 16 columns)
var columnLabels = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p'];
for (var col = 0; col < 16; col++) {
	// Bottom row labels
	var bottomLabel = new Text2(columnLabels[col], {
		size: 32,
		fill: 0xFFFFFF
	});
	bottomLabel.anchor.set(0.5, 0.5);
	bottomLabel.x = boardStartX + col * squareSize + squareSize / 2;
	bottomLabel.y = boardStartY + 8 * squareSize + 25;
	coordinateContainer.addChild(bottomLabel);
	// Top row labels
	var topLabel = new Text2(columnLabels[col], {
		size: 32,
		fill: 0xFFFFFF
	});
	topLabel.anchor.set(0.5, 0.5);
	topLabel.x = boardStartX + col * squareSize + squareSize / 2;
	topLabel.y = boardStartY - 25;
	coordinateContainer.addChild(topLabel);
}
// Row labels (8-1 from top to bottom)
for (var row = 0; row < 8; row++) {
	var rowNumber = (8 - row).toString();
	// Left side labels
	var leftLabel = new Text2(rowNumber, {
		size: 32,
		fill: 0xFFFFFF
	});
	leftLabel.anchor.set(0.5, 0.5);
	leftLabel.x = boardStartX - 25;
	leftLabel.y = boardStartY + row * squareSize + squareSize / 2;
	coordinateContainer.addChild(leftLabel);
	// Right side labels
	var rightLabel = new Text2(rowNumber, {
		size: 32,
		fill: 0xFFFFFF
	});
	rightLabel.anchor.set(0.5, 0.5);
	rightLabel.x = boardStartX + 16 * squareSize + 25;
	rightLabel.y = boardStartY + row * squareSize + squareSize / 2;
	coordinateContainer.addChild(rightLabel);
}
// Initialize pieces with mixed layout - includes quenns, rooks, knights, 2 princesses, and 2 jesters
var basePieceSetup = [['summoner', 'knight', 'bishop', 'queen', 'king', 'queen', 'bishop', 'knight', 'rook', 'jester', 'knight', 'bishop', 'princess', 'princess', 'snake', 'jester'], ['pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn']];
var pieceSetup = shufflePiecesForNewRound(basePieceSetup);
// Create black pieces
for (var row = 0; row < 2; row++) {
	for (var col = 0; col < 16; col++) {
		var piece = new ChessPiece(pieceSetup[row][col], 'black', row, col);
		pieces.push(piece);
		gameBoard[row][col] = piece;
		game.addChild(piece);
		piece.updatePosition();
	}
}
// Create white pieces
for (var row = 6; row < 8; row++) {
	for (var col = 0; col < 16; col++) {
		var pieceType = row === 6 ? 'pawn' : pieceSetup.whiteSetup[col];
		var piece = new ChessPiece(pieceType, 'white', row, col);
		pieces.push(piece);
		gameBoard[row][col] = piece;
		game.addChild(piece);
		piece.updatePosition();
	}
}
// Initialize king square
updateKingSquare();
// UI Elements
var turnText = new Text2('Your Turn', {
	size: 80,
	fill: 0xFFFFFF
});
turnText.anchor.set(0.5, 0);
LK.gui.top.addChild(turnText);
// Lives display - positioned behind chess pieces on the board
var whiteLivesContainer = new Container();
game.addChild(whiteLivesContainer);
var blackLivesContainer = new Container();
game.addChild(blackLivesContainer);
var whiteLivesText = new Text2('Your Lives: 4', {
	size: 40,
	fill: 0xFFFFFF
});
whiteLivesText.anchor.set(0.5, 0.5);
whiteLivesText.x = boardStartX + 16 * squareSize / 2;
whiteLivesText.y = boardStartY + 8 * squareSize + 50;
whiteLivesContainer.addChild(whiteLivesText);
var blackLivesText = new Text2('Enemy Lives: 4', {
	size: 40,
	fill: 0xFF0000
});
blackLivesText.anchor.set(0.5, 0.5);
blackLivesText.x = boardStartX + 16 * squareSize / 2;
blackLivesText.y = boardStartY - 50;
blackLivesContainer.addChild(blackLivesText);
// Lives visual indicators
var whiteLivesHearts = [];
var blackLivesHearts = [];
for (var i = 0; i < 4; i++) {
	var whiteHeart = LK.getAsset('playerLifeBar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	whiteHeart.x = boardStartX + 16 * squareSize / 2 - 75 + i * 50;
	whiteHeart.y = boardStartY + 8 * squareSize + 100;
	whiteLivesContainer.addChild(whiteHeart);
	whiteLivesHearts.push(whiteHeart);
	var blackHeart = LK.getAsset('aiLifeBar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	blackHeart.x = boardStartX + 16 * squareSize / 2 - 75 + i * 50;
	blackHeart.y = boardStartY - 100;
	blackLivesContainer.addChild(blackHeart);
	blackLivesHearts.push(blackHeart);
}
// Create stamina bar display
staminaContainer = new Container();
game.addChild(staminaContainer);
var staminaText = new Text2('Stamina', {
	size: 40,
	fill: 0xff69b4
});
staminaText.anchor.set(0.5, 0.5);
staminaText.x = boardStartX + 16 * squareSize - 100;
staminaText.y = boardStartY + 8 * squareSize + 150;
staminaContainer.addChild(staminaText);
for (var i = 0; i < maxStaminaPoints; i++) {
	var staminaBar = LK.getAsset('staminaBar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	staminaBar.x = boardStartX + 16 * squareSize - 200 + i * 50;
	staminaBar.y = boardStartY + 8 * squareSize + 200;
	staminaContainer.addChild(staminaBar);
	staminaBars.push(staminaBar);
}
// Create AI stamina bar display
var aiStaminaContainer = new Container();
game.addChild(aiStaminaContainer);
var aiStaminaText = new Text2('Enemy Stamina', {
	size: 40,
	fill: 0xff69b4
});
aiStaminaText.anchor.set(0.5, 0.5);
aiStaminaText.x = boardStartX + 16 * squareSize - 100;
aiStaminaText.y = boardStartY - 150;
aiStaminaContainer.addChild(aiStaminaText);
var aiStaminaBars = [];
for (var i = 0; i < aiMaxStaminaPoints; i++) {
	var aiStaminaBar = LK.getAsset('staminaBar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	aiStaminaBar.x = boardStartX + 16 * squareSize - 200 + i * 50;
	aiStaminaBar.y = boardStartY - 100;
	aiStaminaContainer.addChild(aiStaminaBar);
	aiStaminaBars.push(aiStaminaBar);
}
updateStaminaDisplay();
// Timer display elements
var whiteTimerText = new Text2('1:00', {
	size: 60,
	fill: 0xFFFFFF
});
whiteTimerText.anchor.set(0.5, 0.5);
whiteTimerText.x = boardStartX + 0 * squareSize + squareSize / 2; // Align with "a" column
whiteTimerText.y = boardStartY + 8 * squareSize + 75; // Below the bottom "a" label
game.addChild(whiteTimerText);
var blackTimerText = new Text2('1:00', {
	size: 60,
	fill: 0xFF0000
});
blackTimerText.anchor.set(0.5, 0.5);
blackTimerText.x = boardStartX + 0 * squareSize + squareSize / 2; // Align with "a" column
blackTimerText.y = boardStartY - 75; // Above the top "a" label
game.addChild(blackTimerText);
// Initialize and start timer after UI elements are created
updateTimerDisplay();
startTimer();
function getPieceAt(row, col) {
	if (row < 0 || row > 7 || col < 0 || col > 15) {
		return null;
	}
	return gameBoard[row][col];
}
function isPathClear(fromRow, fromCol, toRow, toCol) {
	var rowStep = toRow > fromRow ? 1 : toRow < fromRow ? -1 : 0;
	var colStep = toCol > fromCol ? 1 : toCol < fromCol ? -1 : 0;
	var currentRow = fromRow + rowStep;
	var currentCol = fromCol + colStep;
	while (currentRow !== toRow || currentCol !== toCol) {
		if (getPieceAt(currentRow, currentCol)) {
			return false;
		}
		currentRow += rowStep;
		currentCol += colStep;
	}
	return true;
}
function getSquareFromPosition(x, y) {
	var col = Math.floor((x - boardStartX) / squareSize);
	var row = Math.floor((y - boardStartY) / squareSize);
	if (row >= 0 && row < 8 && col >= 0 && col < 16) {
		return {
			row: row,
			col: col
		};
	}
	return null;
}
function clearHighlights() {
	// Smooth fade-out for highlights
	for (var i = 0; i < highlightSquares.length; i++) {
		var highlight = highlightSquares[i];
		tween(highlight, {
			alpha: 0,
			scaleX: 0.8,
			scaleY: 0.8
		}, {
			duration: 200,
			easing: tween.easeIn,
			onFinish: function onFinish() {
				if (!highlight.destroyed) highlight.destroy();
			}
		});
	}
	highlightSquares = [];
	for (var i = 0; i < validMoveSquares.length; i++) {
		var highlight = validMoveSquares[i];
		// Immediately destroy flashing green squares instead of animating them out
		if (!highlight.destroyed) highlight.destroy();
	}
	validMoveSquares = [];
	for (var i = 0; i < escapeSquares.length; i++) {
		var highlight = escapeSquares[i];
		tween(highlight, {
			alpha: 0,
			scaleX: 0.8,
			scaleY: 0.8
		}, {
			duration: 200,
			easing: tween.easeIn,
			onFinish: function onFinish() {
				if (!highlight.destroyed) highlight.destroy();
			}
		});
	}
	escapeSquares = [];
}
function createCaptureParticles(x, y, color) {
	// Create sparkling particle effect for captures
	for (var i = 0; i < 8; i++) {
		var particle = LK.getAsset('poisonEffect', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.3,
			scaleY: 0.3,
			tint: color || 0xFFD700,
			alpha: 1.0
		});
		particle.x = x;
		particle.y = y;
		game.addChild(particle);
		// Animate particles spreading out
		var angle = i / 8 * Math.PI * 2;
		var distance = 60 + Math.random() * 40;
		var targetX = x + Math.cos(angle) * distance;
		var targetY = y + Math.sin(angle) * distance;
		tween(particle, {
			x: targetX,
			y: targetY,
			alpha: 0,
			scaleX: 0.1,
			scaleY: 0.1,
			rotation: Math.random() * Math.PI * 2
		}, {
			duration: 800 + Math.random() * 400,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				if (!particle.destroyed) particle.destroy();
			}
		});
	}
}
function createExplosionEffect(centerRow, centerCol) {
	// Create explosion effect in 3x3 area around the center position
	for (var dr = -1; dr <= 1; dr++) {
		for (var dc = -1; dc <= 1; dc++) {
			var explosionRow = centerRow + dr;
			var explosionCol = centerCol + dc;
			// Check bounds
			if (explosionRow >= 0 && explosionRow < 8 && explosionCol >= 0 && explosionCol < 16) {
				var explosionX = boardStartX + explosionCol * squareSize + squareSize / 2;
				var explosionY = boardStartY + explosionRow * squareSize + squareSize / 2;
				// Create multiple explosion particles for each square
				for (var i = 0; i < 12; i++) {
					var explosionParticle = LK.getAsset('poisonEffect', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.6 + Math.random() * 0.4,
						scaleY: 0.6 + Math.random() * 0.4,
						tint: 0xFF6600 + Math.floor(Math.random() * 0x9900),
						// Orange to red explosion colors
						alpha: 0.9
					});
					explosionParticle.x = explosionX + (Math.random() - 0.5) * 60;
					explosionParticle.y = explosionY + (Math.random() - 0.5) * 60;
					game.addChild(explosionParticle);
					// Animate explosion particles
					var explosionAngle = Math.random() * Math.PI * 2;
					var explosionDistance = 80 + Math.random() * 60;
					var explosionTargetX = explosionX + Math.cos(explosionAngle) * explosionDistance;
					var explosionTargetY = explosionY + Math.sin(explosionAngle) * explosionDistance;
					tween(explosionParticle, {
						x: explosionTargetX,
						y: explosionTargetY,
						alpha: 0,
						scaleX: 0.1,
						scaleY: 0.1,
						rotation: Math.random() * Math.PI * 4
					}, {
						duration: 600 + Math.random() * 400,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							if (!explosionParticle.destroyed) explosionParticle.destroy();
						}
					});
				}
				// Create bright flash effect in center of explosion
				if (dr === 0 && dc === 0) {
					var flash = LK.getAsset('highlightSquare', {
						anchorX: 0,
						anchorY: 0,
						alpha: 0.8,
						tint: 0xFF3300,
						scaleX: 1.5,
						scaleY: 1.5
					});
					flash.x = boardStartX + explosionCol * squareSize - squareSize * 0.25;
					flash.y = boardStartY + explosionRow * squareSize - squareSize * 0.25;
					game.addChild(flash);
					tween(flash, {
						alpha: 0,
						scaleX: 2.5,
						scaleY: 2.5
					}, {
						duration: 800,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							if (!flash.destroyed) flash.destroy();
						}
					});
				}
			}
		}
	}
}
function updateKingSquare() {
	// Remove existing king squares
	if (kingSquare) {
		kingSquare.destroy();
		kingSquare = null;
	}
	if (blackKingSquare) {
		blackKingSquare.destroy();
		blackKingSquare = null;
	}
	// Find the white king and create purple square under it
	var whiteKing = findKing('white');
	if (whiteKing) {
		kingSquare = LK.getAsset('kingSquare', {
			anchorX: 0,
			anchorY: 0,
			alpha: 0.8
		});
		kingSquare.x = boardStartX + whiteKing.col * squareSize;
		kingSquare.y = boardStartY + whiteKing.row * squareSize;
		boardContainer.addChild(kingSquare);
	}
	// Find the black king and create purple square under it
	var blackKing = findKing('black');
	if (blackKing) {
		blackKingSquare = LK.getAsset('kingSquare', {
			anchorX: 0,
			anchorY: 0,
			alpha: 0.8
		});
		blackKingSquare.x = boardStartX + blackKing.col * squareSize;
		blackKingSquare.y = boardStartY + blackKing.row * squareSize;
		boardContainer.addChild(blackKingSquare);
	}
}
function highlightSquare(row, col, color) {
	var assetName = 'validMoveSquare';
	if (color === 'blue') {
		assetName = 'highlightSquare';
	} else if (color === 'yellow') {
		assetName = 'escapeSquare';
	}
	var highlight = LK.getAsset(assetName, {
		anchorX: 0,
		anchorY: 0,
		alpha: 0.0,
		scaleX: 0.8,
		scaleY: 0.8
	});
	highlight.x = boardStartX + col * squareSize;
	highlight.y = boardStartY + row * squareSize;
	game.addChild(highlight);
	// Smooth fade-in and scale animation for highlights
	tween(highlight, {
		alpha: 0.7,
		scaleX: 1.0,
		scaleY: 1.0
	}, {
		duration: 250,
		easing: tween.easeOut
	});
	// Add subtle pulsing animation for valid moves
	if (color === 'green') {
		var _pulseTween = function pulseTween() {
			tween(highlight, {
				alpha: 0.4
			}, {
				duration: 800,
				easing: tween.easeInOut,
				onFinish: function onFinish() {
					tween(highlight, {
						alpha: 0.7
					}, {
						duration: 800,
						easing: tween.easeInOut,
						onFinish: _pulseTween
					});
				}
			});
		};
		_pulseTween();
	}
	if (color === 'blue') {
		highlightSquares.push(highlight);
	} else if (color === 'yellow') {
		escapeSquares.push(highlight);
	} else {
		validMoveSquares.push(highlight);
	}
}
function showValidMoves(piece) {
	validMoves = [];
	var playerInCheck = isInCheck(piece.pieceColor);
	// Always highlight the selected piece position in blue first
	highlightSquare(piece.row, piece.col, 'blue');
	for (var row = 0; row < 8; row++) {
		for (var col = 0; col < 16; col++) {
			if (piece.canMoveTo(row, col)) {
				// If in check, only allow moves that escape check
				if (playerInCheck) {
					if (canEscapeCheck(piece, row, col)) {
						validMoves.push({
							row: row,
							col: col
						});
						// Highlight escape move in yellow when in check
						highlightSquare(row, col, 'yellow');
					}
				} else {
					validMoves.push({
						row: row,
						col: col
					});
					highlightSquare(row, col, 'green');
				}
			}
		}
	}
}
function movePiece(piece, newRow, newCol) {
	var capturedPiece = getPieceAt(newRow, newCol);
	var isCapture = capturedPiece !== null;
	// Remove piece from old position
	gameBoard[piece.row][piece.col] = null;
	// Check for king auto-capture of adjacent snake before normal capture handling
	if (piece.pieceType === 'snake') {
		// Check if any enemy king is adjacent to the snake's new position
		var enemyColor = piece.pieceColor === 'white' ? 'black' : 'white';
		var enemyKing = findKing(enemyColor);
		if (enemyKing) {
			var kingRowDiff = Math.abs(enemyKing.row - newRow);
			var kingColDiff = Math.abs(enemyKing.col - newCol);
			// If king is adjacent (including diagonal), king automatically captures snake
			if (kingRowDiff <= 1 && kingColDiff <= 1) {
				// King auto-captures the snake
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === piece) {
						pieces[i].destroy();
						pieces.splice(i, 1);
						break;
					}
				}
				// Move king to snake position
				gameBoard[enemyKing.row][enemyKing.col] = null;
				enemyKing.row = newRow;
				enemyKing.col = newCol;
				gameBoard[enemyKing.row][enemyKing.col] = enemyKing;
				enemyKing.updatePosition(true);
				updateKingSquare();
				LK.getSound('capture').play();
				turnText.setText(enemyKing.pieceColor.charAt(0).toUpperCase() + enemyKing.pieceColor.slice(1) + ' King Auto-Captures Snake!');
				// Reset snake state
				currentSnakePiece = null;
				snakeMovesRemaining = 0;
				activeSnakePiece = null;
				// Switch turns
				currentPlayer = currentPlayer === 'white' ? 'black' : 'white';
				return;
			}
		}
	}
	// Handle jester jump captures
	if (piece.pieceType === 'jester') {
		var rowDiff = newRow - piece.row;
		var colDiff = newCol - piece.col;
		var absRowDiff = Math.abs(rowDiff);
		var absColDiff = Math.abs(colDiff);
		// Check if this is a 2-square move (potential jump)
		if (Math.max(absRowDiff, absColDiff) === 2) {
			// Calculate middle square position
			var middleRow = piece.row + (rowDiff > 0 ? 1 : rowDiff < 0 ? -1 : 0);
			var middleCol = piece.col + (colDiff > 0 ? 1 : colDiff < 0 ? -1 : 0);
			var jumpedPiece = getPieceAt(middleRow, middleCol);
			// If there's an enemy piece in the middle, capture it (jump capture)
			if (jumpedPiece && jumpedPiece.pieceColor !== piece.pieceColor) {
				// Remove jumped piece with effects
				var jumpCaptureX = boardStartX + middleCol * squareSize + squareSize / 2;
				var jumpCaptureY = boardStartY + middleRow * squareSize + squareSize / 2;
				var jumpParticleColor = jumpedPiece.pieceColor === 'white' ? 0xFFD700 : 0xFF4444;
				createCaptureParticles(jumpCaptureX, jumpCaptureY, jumpParticleColor);
				// Animate jumped piece removal
				tween(jumpedPiece, {
					alpha: 0,
					scaleX: 0.5,
					scaleY: 0.5,
					rotation: Math.PI
				}, {
					duration: 300,
					easing: tween.easeIn,
					onFinish: function onFinish() {
						if (!jumpedPiece.destroyed) {
							jumpedPiece.destroy();
						}
					}
				});
				// Play special jester capture sound
				LK.getSound('jesterCapture').play();
				// Remove jumped piece from game state
				gameBoard[middleRow][middleCol] = null;
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === jumpedPiece) {
						pieces.splice(i, 1);
						break;
					}
				}
			}
		}
	}
	// Remove captured piece with visual effects
	if (capturedPiece) {
		// Create particle effects at capture position
		var captureX = boardStartX + newCol * squareSize + squareSize / 2;
		var captureY = boardStartY + newRow * squareSize + squareSize / 2;
		var particleColor = capturedPiece.pieceColor === 'white' ? 0xFFD700 : 0xFF4444;
		createCaptureParticles(captureX, captureY, particleColor);
		// Animate captured piece before removal
		tween(capturedPiece, {
			alpha: 0,
			scaleX: 0.5,
			scaleY: 0.5,
			rotation: Math.PI
		}, {
			duration: 300,
			easing: tween.easeIn,
			onFinish: function onFinish() {
				if (!capturedPiece.destroyed) {
					capturedPiece.destroy();
				}
			}
		});
		// Check if captured piece is a snake in the middle of its multi-move sequence
		if (capturedPiece.pieceType === 'snake' && capturedPiece.snakeMovesThisTurn > 0 && capturedPiece === activeSnakePiece) {
			// Snake was captured before completing its moves - put on cooldown and reset sequence
			capturedPiece.snakeOnCooldown = true;
			capturedPiece.snakeMovesThisTurn = 0;
			capturedPiece.snakeLastMoveDirection = null;
			// Reset global snake state
			currentSnakePiece = null;
			snakeMovesRemaining = 0;
			activeSnakePiece = null;
		}
		// Handle king capture - check if king can counter-capture
		if (capturedPiece.pieceType === 'king') {
			// Check if captured king can counter-capture the attacking piece
			var canCounterCapture = capturedPiece && piece && capturedPiece.canMoveTo(piece.row, piece.col) && isKingSafeAt(capturedPiece, piece.row, piece.col);
			if (canCounterCapture) {
				// Auto counter-capture: king takes the attacking piece
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === piece) {
						pieces[i].destroy();
						pieces.splice(i, 1);
						break;
					}
				}
				// Move king to attacking piece position
				gameBoard[capturedPiece.row][capturedPiece.col] = null;
				capturedPiece.row = piece.row;
				capturedPiece.col = piece.col;
				gameBoard[capturedPiece.row][capturedPiece.col] = capturedPiece;
				capturedPiece.updatePosition(true);
				updateKingSquare();
				LK.getSound('capture').play();
				// Apply 1 damage to the king's side for escaping
				if (capturedPiece.pieceColor === 'white') {
					whiteKingLives--;
					activateAbility('white', whiteKingLives);
				} else {
					blackKingLives--;
					activateAbility('black', blackKingLives);
				}
				updateLivesDisplay();
				turnText.setText(capturedPiece.pieceColor.charAt(0).toUpperCase() + capturedPiece.pieceColor.slice(1) + ' King Counter-Attacks! 1 Life Lost for Escaping!');
				return;
			} else {
				// Reduce king lives
				if (capturedPiece.pieceColor === 'white') {
					whiteKingLives--;
					activateAbility('white', whiteKingLives);
				} else {
					blackKingLives--;
					activateAbility('black', blackKingLives);
				}
				// Update lives display
				updateLivesDisplay();
				// Check if king is out of lives (restart game when lives reach 0)
				if (whiteKingLives <= 0 || blackKingLives <= 0) {
					var winner = whiteKingLives <= 0 ? 'Black' : 'White';
					turnText.setText(winner + (winner === 'Black' ? ' side won.' : ' Wins! King Defeated! New round begins with shuffled pieces!'));
					LK.setTimeout(function () {
						restartGame();
					}, 2000);
					return;
				}
			}
		} else {
			for (var i = 0; i < pieces.length; i++) {
				if (pieces[i] === capturedPiece) {
					pieces[i].destroy();
					pieces.splice(i, 1);
					break;
				}
			}
			// Add stamina point for capturing (exclude Queen and Snake captures)
			if (capturedPiece.pieceType !== 'queen' && capturedPiece.pieceType !== 'snake') {
				if (piece.pieceColor === 'white' && staminaPoints < maxStaminaPoints) {
					staminaPoints++;
					updateStaminaDisplay();
				} else if (piece.pieceColor === 'black' && aiStaminaPoints < aiMaxStaminaPoints) {
					aiStaminaPoints++;
				}
			}
		}
	}
	// Handle castling before moving the king
	if (piece.pieceType === 'king' && Math.abs(newCol - piece.col) === 2) {
		var rookCol, rookNewCol;
		if (newCol > piece.col) {
			// King-side castling
			rookCol = 15;
			rookNewCol = newCol - 1;
		} else {
			// Queen-side castling
			rookCol = 0;
			rookNewCol = newCol + 1;
		}
		var rook = getPieceAt(piece.row, rookCol);
		if (rook) {
			// Move rook
			gameBoard[rook.row][rook.col] = null;
			rook.col = rookNewCol;
			rook.hasMoved = true;
			gameBoard[rook.row][rook.col] = rook;
			rook.updatePosition(true);
		}
	}
	// Move piece to new position
	piece.row = newRow;
	piece.col = newCol;
	piece.hasMoved = true;
	gameBoard[newRow][newCol] = piece;
	piece.updatePosition(true);
	// Handle stamina cost for Queen moves (immediate) and Snake moves (on third move)
	if (piece.pieceType === 'queen') {
		if (piece.pieceColor === 'white' && staminaPoints > 0) {
			staminaPoints--;
			// Store reference to piece that consumed stamina for pink square tracking
			if (!window.whiteStaminaConsumers) window.whiteStaminaConsumers = [];
			window.whiteStaminaConsumers.push({
				type: piece.pieceType,
				row: piece.row,
				col: piece.col,
				id: piece
			});
			updateStaminaDisplay();
		} else if (piece.pieceColor === 'black' && aiStaminaPoints > 0) {
			aiStaminaPoints--;
			// Store reference to piece that consumed stamina for pink square tracking
			if (!window.blackStaminaConsumers) window.blackStaminaConsumers = [];
			window.blackStaminaConsumers.push({
				type: piece.pieceType,
				row: piece.row,
				col: piece.col,
				id: piece
			});
		}
	}
	// Update king square if a king moved
	if (piece.pieceType === 'king') {
		updateKingSquare();
	}
	// Play sound
	if (isCapture) {
		if (piece.pieceType === 'jester') {
			LK.getSound('jesterCapture').play();
		} else {
			LK.getSound('capture').play();
		}
	} else {
		LK.getSound('move').play();
	}
	// Check for pawn promotion
	if (piece.pieceType === 'pawn' && (newRow === 0 || newRow === 7)) {
		promotePawn(piece);
	}
	// Handle summoner move counting and summoning
	if (piece.pieceType === 'summoner') {
		piece.summonerMoveCount++;
		piece.hasSummoned = false; // Reset summoned flag when moving
		if (piece.summonerMoveCount >= 3) {
			// Execute summoning after move animation completes
			LK.setTimeout(function () {
				piece.executeSummon();
			}, 400);
		}
	}
	// Handle snake multi-move mechanics
	if (piece.pieceType === 'snake') {
		// Set this snake as the active snake if starting its turn
		if (piece.snakeMovesThisTurn === 0) {
			activeSnakePiece = piece;
			var rowDiff = newRow - piece.row;
			var colDiff = newCol - piece.col;
			piece.snakeLastMoveDirection = {
				row: rowDiff === 0 ? 0 : rowDiff > 0 ? 1 : -1,
				col: colDiff === 0 ? 0 : colDiff > 0 ? 1 : -1
			};
		}
		// Check if poisoning will occur at the new position after the move
		var willPoison = false;
		var poisonPositions = [{
			row: newRow - 1,
			col: newCol - 1
		}, {
			row: newRow - 1,
			col: newCol
		}, {
			row: newRow - 1,
			col: newCol + 1
		}, {
			row: newRow,
			col: newCol - 1
		}, {
			row: newRow,
			col: newCol + 1
		}, {
			row: newRow + 1,
			col: newCol - 1
		}, {
			row: newRow + 1,
			col: newCol
		}, {
			row: newRow + 1,
			col: newCol + 1
		}];
		for (var i = 0; i < poisonPositions.length; i++) {
			var pos = poisonPositions[i];
			if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
				var pieceAtPos = getPieceAt(pos.row, pos.col);
				if (pieceAtPos && pieceAtPos.pieceColor !== piece.pieceColor) {
					willPoison = true;
					break;
				}
			}
		}
		piece.snakeMovesThisTurn++;
		var maxMoves = willPoison ? 2 : piece.maxSnakeMoves;
		snakeMovesRemaining = maxMoves - piece.snakeMovesThisTurn;
		currentSnakePiece = piece;
		// Apply poison to pieces around the snake's new position
		applyPoisonBehindSnake(piece, newRow, newCol);
		// Handle additional stamina cost for poisoning
		if (willPoison) {
			// Deduct additional stamina for poisoning
			if (piece.pieceColor === 'white' && staminaPoints > 0) {
				staminaPoints--;
				updateStaminaDisplay();
			} else if (piece.pieceColor === 'black' && aiStaminaPoints > 0) {
				aiStaminaPoints--;
			}
		}
		// If poisoning occurred, immediately switch turns after 2 moves
		if (willPoison) {
			// Snake completed poisoning moves - put on cooldown and reset
			piece.snakeMovesThisTurn = 0;
			piece.snakeOnCooldown = true;
			piece.snakeLastMoveDirection = null;
			currentSnakePiece = null;
			snakeMovesRemaining = 0;
			activeSnakePiece = null; // Reset active snake
			turnText.setText(piece.pieceColor.charAt(0).toUpperCase() + piece.pieceColor.slice(1) + ' Snake poisoned enemies! Turn passes to opponent.');
		} else {
			// Snake eats piece at each stop - already handled by capture logic above
			// If snake has more moves, don't switch turns yet
			if (piece.snakeMovesThisTurn < maxMoves) {
				var moveNames = ['', 'First', 'Second', 'Third'];
				turnText.setText(piece.pieceColor.charAt(0).toUpperCase() + piece.pieceColor.slice(1) + ' Snake - ' + moveNames[piece.snakeMovesThisTurn] + ' move complete, ' + snakeMovesRemaining + ' moves remaining');
				// Clear current selection to allow new move
				clearHighlights();
				selectedPiece = null;
				return; // Don't switch turns
			}
			// Snake completed all 3 moves - deduct stamina now and put on cooldown
			if (piece.pieceColor === 'white' && staminaPoints > 0) {
				staminaPoints--;
				// Store reference to piece that consumed stamina for pink square tracking
				if (!window.whiteStaminaConsumers) window.whiteStaminaConsumers = [];
				window.whiteStaminaConsumers.push({
					type: piece.pieceType,
					row: piece.row,
					col: piece.col,
					id: piece
				});
				updateStaminaDisplay();
			} else if (piece.pieceColor === 'black' && aiStaminaPoints > 0) {
				aiStaminaPoints--;
				// Store reference to piece that consumed stamina for pink square tracking
				if (!window.blackStaminaConsumers) window.blackStaminaConsumers = [];
				window.blackStaminaConsumers.push({
					type: piece.pieceType,
					row: piece.row,
					col: piece.col,
					id: piece
				});
			}
			piece.snakeMovesThisTurn = 0;
			piece.snakeOnCooldown = true;
			piece.snakeLastMoveDirection = null;
			currentSnakePiece = null;
			snakeMovesRemaining = 0;
			activeSnakePiece = null; // Reset active snake
		}
	}
	// Switch turns
	currentPlayer = currentPlayer === 'white' ? 'black' : 'white';
	// Reset timer for new turn
	currentTurnStartTime = Date.now();
	// Reduce poison turns and remove snake cooldown for all pieces of the new current player
	for (var i = 0; i < pieces.length; i++) {
		if (pieces[i].pieceColor === currentPlayer) {
			pieces[i].reducePoisonTurns();
			// Remove snake cooldown when it becomes this player's turn
			if (pieces[i].pieceType === 'snake') {
				pieces[i].snakeOnCooldown = false;
			}
		}
	}
	turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + '\'s Turn');
	// Check for check/checkmate
	if (isInCheck(currentPlayer)) {
		// In check situations, look for defensive moves: capturing the threatening piece, blocking, or king escape
		var king = findKing(currentPlayer);
		var threateningPiece = findThreateningPiece(king);
		var canKingCounterCapture = false;
		var canDefend = false;
		var defendingPiece = null;
		var defenseRow = -1;
		var defenseCol = -1;
		// Check for defensive options when in check
		if (threateningPiece) {
			// Priority 1: King can directly counter-capture the threatening piece
			if (king && king.canMoveTo(threateningPiece.row, threateningPiece.col) && isKingSafeAt(king, threateningPiece.row, threateningPiece.col)) {
				canKingCounterCapture = true;
				canDefend = true;
				defendingPiece = king;
				defenseRow = threateningPiece.row;
				defenseCol = threateningPiece.col;
			} else {
				// Priority 2: Any other piece can capture the threatening piece to protect the king
				for (var i = 0; i < pieces.length; i++) {
					var piece = pieces[i];
					if (piece.pieceColor === currentPlayer && piece !== king && piece.canMoveTo(threateningPiece.row, threateningPiece.col)) {
						// Test if this capture would resolve the check
						if (canEscapeCheck(piece, threateningPiece.row, threateningPiece.col)) {
							canDefend = true;
							defendingPiece = piece;
							defenseRow = threateningPiece.row;
							defenseCol = threateningPiece.col;
							break;
						}
					}
				}
				// Priority 3: If no capture is possible, look for blocking moves or king escape moves
				if (!canDefend) {
					// Check if any piece can block the attack path or if king can escape
					var allDefensiveMoves = getAllValidMoves(currentPlayer);
					canDefend = allDefensiveMoves.length > 0;
				}
			}
		}
		// If defensive action is available, execute it
		if (canDefend && defendingPiece) {
			// Auto-defense: piece protects king by capturing the threatening piece
			for (var i = 0; i < pieces.length; i++) {
				if (pieces[i] === threateningPiece) {
					pieces[i].destroy();
					pieces.splice(i, 1);
					break;
				}
			}
			// Move defending piece to capture position
			gameBoard[defendingPiece.row][defendingPiece.col] = null;
			defendingPiece.row = defenseRow;
			defendingPiece.col = defenseCol;
			gameBoard[defendingPiece.row][defendingPiece.col] = defendingPiece;
			defendingPiece.updatePosition(true);
			if (defendingPiece.pieceType === 'king') {
				updateKingSquare();
				// King counter-capture - game continues without penalty when king directly captures threat
				if (canKingCounterCapture) {
					turnText.setText(defendingPiece.pieceColor.charAt(0).toUpperCase() + defendingPiece.pieceColor.slice(1) + ' King Counter-Captures Threatening Piece!');
				} else {
					// Apply 1 damage to king's side for escaping by counter-capture in defensive situations
					if (defendingPiece.pieceColor === 'white') {
						whiteKingLives--;
						activateAbility('white', whiteKingLives);
					} else {
						blackKingLives--;
						activateAbility('black', blackKingLives);
					}
					updateLivesDisplay();
					turnText.setText(defendingPiece.pieceColor.charAt(0).toUpperCase() + defendingPiece.pieceColor.slice(1) + ' King Defends! 1 Life Lost for Escaping!');
				}
			} else {
				var pieceTitle = defendingPiece.pieceType.charAt(0).toUpperCase() + defendingPiece.pieceType.slice(1);
				turnText.setText(defendingPiece.pieceColor.charAt(0).toUpperCase() + defendingPiece.pieceColor.slice(1) + ' ' + pieceTitle + ' Protects King by Capturing Threat!');
			}
			LK.getSound('capture').play();
			// Continue game - switch turns
			currentPlayer = currentPlayer === 'white' ? 'black' : 'white';
			turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + '\'s Turn');
			gameState = 'playing';
			// Trigger AI move if it's black's turn
			if (currentPlayer === 'black') {
				makeAIMove();
			}
			return;
		}
		// Check if player has no defensive options (no escape moves) - comprehensive defense check
		if (!hasValidEscapeMoves(currentPlayer)) {
			// Look for all possible defensive options: king counter-capture, piece protection, blocking
			var king = findKing(currentPlayer);
			var threateningPiece = findThreateningPiece(king);
			var canDefendKing = false;
			var protectingPiece = null;
			if (threateningPiece) {
				// Option 1: King can directly counter-capture the threatening piece
				if (king && king.canMoveTo(threateningPiece.row, threateningPiece.col) && isKingSafeAt(king, threateningPiece.row, threateningPiece.col)) {
					canDefendKing = true;
					protectingPiece = king;
				} else {
					// Option 2: Any other piece can protect the king by capturing the threatening piece
					for (var i = 0; i < pieces.length; i++) {
						var piece = pieces[i];
						if (piece.pieceColor === currentPlayer && piece !== king && piece.canMoveTo(threateningPiece.row, threateningPiece.col)) {
							if (canEscapeCheck(piece, threateningPiece.row, threateningPiece.col)) {
								canDefendKing = true;
								protectingPiece = piece;
								break;
							}
						}
					}
					// Option 3: Any piece can block the attack path (if attack is not adjacent)
					if (!canDefendKing && king && threateningPiece) {
						var blockingMoves = getAllValidMoves(currentPlayer);
						for (var i = 0; i < blockingMoves.length; i++) {
							if (canEscapeCheck(blockingMoves[i].piece, blockingMoves[i].toRow, blockingMoves[i].toCol)) {
								canDefendKing = true;
								protectingPiece = blockingMoves[i].piece;
								break;
							}
						}
					}
				}
			}
			if (canDefendKing && protectingPiece && threateningPiece) {
				// Execute king protection with explosion effect
				var threateningPieceRow = threateningPiece.row;
				var threateningPieceCol = threateningPiece.col;
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === threateningPiece) {
						pieces[i].destroy();
						pieces.splice(i, 1);
						break;
					}
				}
				// Create explosion effect where threatening piece was destroyed
				createExplosionEffect(threateningPieceRow, threateningPieceCol);
				// Move protecting piece to capture position
				gameBoard[protectingPiece.row][protectingPiece.col] = null;
				protectingPiece.row = threateningPiece.row;
				protectingPiece.col = threateningPiece.col;
				gameBoard[protectingPiece.row][protectingPiece.col] = protectingPiece;
				protectingPiece.updatePosition(true);
				if (protectingPiece.pieceType === 'king') {
					updateKingSquare();
				}
				LK.getSound('capture').play();
				var pieceTitle = protectingPiece.pieceType.charAt(0).toUpperCase() + protectingPiece.pieceType.slice(1);
				turnText.setText(protectingPiece.pieceColor.charAt(0).toUpperCase() + protectingPiece.pieceColor.slice(1) + ' ' + pieceTitle + ' Protects King! Game Continues!');
				// Switch turns and continue game
				currentPlayer = currentPlayer === 'white' ? 'black' : 'white';
				turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + '\'s Turn');
				gameState = 'playing';
				// Trigger AI move if it's black's turn
				if (currentPlayer === 'black') {
					makeAIMove();
				}
				return;
			}
			// Checkmate situation - king is trapped and cannot escape, lose 2 lives and remove only the checking piece
			if (currentPlayer === 'white') {
				whiteKingLives -= 2;
				if (whiteKingLives < 0) whiteKingLives = 0;
			} else {
				blackKingLives -= 2;
				if (blackKingLives < 0) blackKingLives = 0;
			}
			// Remove only the piece that is currently checking the king (the threatening piece)
			var king = findKing(currentPlayer);
			var checkingPiece = findThreateningPiece(king);
			if (checkingPiece) {
				var checkingPieceRow = checkingPiece.row;
				var checkingPieceCol = checkingPiece.col;
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === checkingPiece) {
						gameBoard[checkingPiece.row][checkingPiece.col] = null;
						checkingPiece.destroy();
						pieces.splice(i, 1);
						break;
					}
				}
				// Create explosion effect where checking piece was destroyed
				createExplosionEffect(checkingPieceRow, checkingPieceCol);
			}
			updateLivesDisplay();
			// Check if king is out of lives (restart game when lives reach 0)
			if (whiteKingLives <= 0 || blackKingLives <= 0) {
				var winner = whiteKingLives <= 0 ? 'Black' : 'White';
				turnText.setText(winner + (winner === 'Black' ? ' side won.' : ' Wins! King Out of Lives!'));
				LK.setTimeout(function () {
					restartGame();
				}, 2000);
				return;
			}
			turnText.setText('Checkmate! ' + currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + ' King loses 2 lives! Threatening piece destroyed!');
			// Switch turns and continue game
			currentPlayer = currentPlayer === 'white' ? 'black' : 'white';
			LK.setTimeout(function () {
				turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + '\'s Turn');
				gameState = 'playing';
				// Trigger AI move if it's black's turn
				if (currentPlayer === 'black') {
					makeAIMove();
				}
			}, 2000);
			return;
		}
		// Reduce king lives when in check but not checkmated
		if (currentPlayer === 'white') {
			whiteKingLives--;
			activateAbility('white', whiteKingLives);
		} else {
			blackKingLives--;
			activateAbility('black', blackKingLives);
		}
		updateLivesDisplay();
		// Check if king is out of lives (restart game when lives reach 0)
		if (whiteKingLives <= 0 || blackKingLives <= 0) {
			var winner = whiteKingLives <= 0 ? 'Black' : 'White';
			turnText.setText(winner + (winner === 'Black' ? ' side won.' : ' Wins! King Out of Lives! New round begins with shuffled pieces!'));
			LK.setTimeout(function () {
				restartGame();
			}, 2000);
			return;
		}
		gameState = 'check';
		LK.getSound('check').play();
		// Add dramatic check visual effect
		LK.effects.flashScreen(0xFF0000, 800);
		var kingInCheck = findKing(currentPlayer);
		if (kingInCheck) {
			// Make the king flash red
			tween(kingInCheck, {
				tint: 0xFF6666
			}, {
				duration: 300,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					tween(kingInCheck, {
						tint: 0xFFFFFF
					}, {
						duration: 300,
						easing: tween.easeOut
					});
				}
			});
		}
		var currentLives = currentPlayer === 'white' ? whiteKingLives : blackKingLives;
		if (currentLives === 0) {
			turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + ' in Check! FINAL LIFE - Must Escape or Lose!');
		} else {
			turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + ' in Check! Lives: ' + currentLives + ' - Must Escape!');
		}
	} else if (isStalemate(currentPlayer)) {
		gameState = 'stalemate';
		turnText.setText('Stalemate!');
		LK.setTimeout(function () {
			restartGame();
		}, 2000);
	} else {
		gameState = 'playing';
	}
	// Trigger AI move if it's black's turn
	if (currentPlayer === 'black' && (gameState === 'playing' || gameState === 'check')) {
		makeAIMove();
	}
}
function getPieceValue(pieceType) {
	switch (pieceType) {
		case 'pawn':
			return 1;
		case 'bishop':
			return 3;
		case 'knight':
			return 3;
		case 'rook':
			return 5;
		case 'queen':
			return 9;
		case 'snake':
			return 6;
		// Higher value due to special abilities
		case 'jester':
			return 4;
		// Moderate value for unique movement
		case 'princess':
			return 8;
		case 'summoner':
			return 8;
		// Same value as princess
		case 'king':
			return 0;
		default:
			return 0;
	}
}
function promotePawn(pawn) {
	// Promote pawn to quenn (most powerful standard piece available)
	var originalRow = pawn.row;
	var originalCol = pawn.col;
	var originalColor = pawn.pieceColor;
	// Remove old pawn
	pawn.destroy();
	for (var i = 0; i < pieces.length; i++) {
		if (pieces[i] === pawn) {
			pieces.splice(i, 1);
			break;
		}
	}
	gameBoard[originalRow][originalCol] = null;
	// Create new queen
	var newQueen = new ChessPiece('queen', originalColor, originalRow, originalCol);
	pieces.push(newQueen);
	gameBoard[originalRow][originalCol] = newQueen;
	game.addChild(newQueen);
	newQueen.updatePosition();
}
function findKing(color) {
	for (var i = 0; i < pieces.length; i++) {
		if (pieces[i].pieceType === 'king' && pieces[i].pieceColor === color) {
			return pieces[i];
		}
	}
	return null;
}
function isInCheck(color) {
	var king = findKing(color);
	if (!king) return false;
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor !== color && piece.canMoveTo(king.row, king.col)) {
			return true;
		}
	}
	return false;
}
function isCheckmate(color) {
	if (!isInCheck(color)) return false;
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === color) {
			for (var row = 0; row < 8; row++) {
				for (var col = 0; col < 16; col++) {
					if (piece.canMoveTo(row, col)) {
						// Simulate move
						var originalRow = piece.row;
						var originalCol = piece.col;
						var capturedPiece = getPieceAt(row, col);
						gameBoard[originalRow][originalCol] = null;
						gameBoard[row][col] = piece;
						piece.row = row;
						piece.col = col;
						var stillInCheck = isInCheck(color);
						// Restore position
						piece.row = originalRow;
						piece.col = originalCol;
						gameBoard[originalRow][originalCol] = piece;
						gameBoard[row][col] = capturedPiece;
						if (!stillInCheck) {
							return false;
						}
					}
				}
			}
		}
	}
	return true;
}
function isStalemate(color) {
	if (isInCheck(color)) return false;
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === color) {
			for (var row = 0; row < 8; row++) {
				for (var col = 0; col < 16; col++) {
					if (piece.canMoveTo(row, col)) {
						return false;
					}
				}
			}
		}
	}
	return true;
}
function getAllValidMoves(color) {
	var allMoves = [];
	var playerInCheck = isInCheck(color);
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === color) {
			for (var row = 0; row < 8; row++) {
				for (var col = 0; col < 16; col++) {
					if (piece.canMoveTo(row, col)) {
						// If in check, only allow moves that escape check
						if (playerInCheck) {
							if (canEscapeCheck(piece, row, col)) {
								allMoves.push({
									piece: piece,
									toRow: row,
									toCol: col
								});
							}
						} else {
							allMoves.push({
								piece: piece,
								toRow: row,
								toCol: col
							});
						}
					}
				}
			}
		}
	}
	return allMoves;
}
function makeAIMove() {
	if (currentPlayer !== 'black' || gameState !== 'playing' && gameState !== 'check') return;
	// If there's an active snake continuing its multi-move sequence, prioritize it
	if (activeSnakePiece && activeSnakePiece.pieceColor === 'black' && snakeMovesRemaining > 0) {
		var snakeMoves = [];
		// Get valid moves only for the active snake
		for (var row = 0; row < 8; row++) {
			for (var col = 0; col < 16; col++) {
				if (activeSnakePiece.canMoveTo(row, col)) {
					snakeMoves.push({
						piece: activeSnakePiece,
						toRow: row,
						toCol: col
					});
				}
			}
		}
		if (snakeMoves.length > 0) {
			var bestSnakeMove = chooseBestAIMove(snakeMoves);
			if (bestSnakeMove) {
				LK.setTimeout(function () {
					movePiece(bestSnakeMove.piece, bestSnakeMove.toRow, bestSnakeMove.toCol);
					// Continue snake moves if still the AI's turn and snake has moves left
					if (currentSnakePiece && currentSnakePiece.pieceColor === 'black' && snakeMovesRemaining > 0 && currentPlayer === 'black') {
						LK.setTimeout(function () {
							makeAIMove(); // Recursive call for next snake move
						}, 800);
					}
				}, 800);
				return;
			}
		}
	}
	var validAIMoves = getAllValidMoves('black');
	// Check if AI has no valid moves but can defend king
	if (validAIMoves.length === 0 && isInCheck('black')) {
		var blackKing = findKing('black');
		var threateningPiece = findThreateningPiece(blackKing);
		var canDefendAI = false;
		var defendingAIPiece = null;
		var defenseAIRow = -1;
		var defenseAICol = -1;
		// Look for defensive options for AI king
		if (threateningPiece) {
			// Priority 1: AI king can directly counter-capture the threatening piece
			if (blackKing && blackKing.canMoveTo(threateningPiece.row, threateningPiece.col) && isKingSafeAt(blackKing, threateningPiece.row, threateningPiece.col)) {
				canDefendAI = true;
				defendingAIPiece = blackKing;
				defenseAIRow = threateningPiece.row;
				defenseAICol = threateningPiece.col;
			} else {
				// Priority 2: Any other AI piece can protect the king by capturing the threatening piece
				for (var i = 0; i < pieces.length; i++) {
					var piece = pieces[i];
					if (piece.pieceColor === 'black' && piece !== blackKing && piece.canMoveTo(threateningPiece.row, threateningPiece.col)) {
						// Test if this capture would protect the AI king
						if (canEscapeCheck(piece, threateningPiece.row, threateningPiece.col)) {
							canDefendAI = true;
							defendingAIPiece = piece;
							defenseAIRow = threateningPiece.row;
							defenseAICol = threateningPiece.col;
							break;
						}
					}
				}
			}
		}
		if (canDefendAI) {
			// AI defense: piece protects king by capturing the threatening piece
			LK.setTimeout(function () {
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === threateningPiece) {
						pieces[i].destroy();
						pieces.splice(i, 1);
						break;
					}
				}
				// Move AI defending piece to capture position
				gameBoard[defendingAIPiece.row][defendingAIPiece.col] = null;
				defendingAIPiece.row = defenseAIRow;
				defendingAIPiece.col = defenseAICol;
				gameBoard[defendingAIPiece.row][defendingAIPiece.col] = defendingAIPiece;
				defendingAIPiece.updatePosition(true);
				if (defendingAIPiece.pieceType === 'king') {
					updateKingSquare();
					// AI King counter-capture - game continues normally
					if (defendingAIPiece === blackKing) {
						turnText.setText('Black King Protects Itself! Game Continues!');
					} else {
						// Apply 1 damage to AI king for defensive action in extreme situations
						blackKingLives--;
						activateAbility('black', blackKingLives);
						updateLivesDisplay();
						turnText.setText('Black King Defends! 1 Life Lost for Escaping!');
					}
				} else {
					var pieceTitle = defendingAIPiece.pieceType.charAt(0).toUpperCase() + defendingAIPiece.pieceType.slice(1);
					turnText.setText('Black ' + pieceTitle + ' Protects King by Capturing Threat!');
				}
				LK.getSound('capture').play();
				// Continue game - switch turns
				currentPlayer = 'white';
				turnText.setText('Your Turn');
				gameState = 'playing';
			}, 800);
			return;
		} else {
			// No auto-capture possible and no valid escape moves - checkmate, lose 2 lives and remove only the checking piece
			blackKingLives -= 2;
			if (blackKingLives < 0) blackKingLives = 0;
			// Remove only the piece that is currently checking the AI king (the threatening piece)
			var blackKing = findKing('black');
			var checkingPiece = findThreateningPiece(blackKing);
			if (checkingPiece) {
				var checkingPieceRow = checkingPiece.row;
				var checkingPieceCol = checkingPiece.col;
				for (var i = 0; i < pieces.length; i++) {
					if (pieces[i] === checkingPiece) {
						gameBoard[checkingPiece.row][checkingPiece.col] = null;
						checkingPiece.destroy();
						pieces.splice(i, 1);
						break;
					}
				}
				// Create explosion effect where checking piece was destroyed
				createExplosionEffect(checkingPieceRow, checkingPieceCol);
			}
			updateLivesDisplay();
			// Check if AI king is out of lives
			if (blackKingLives <= 0) {
				turnText.setText('White Wins! AI King Out of Lives! New round begins with shuffled pieces!');
				LK.setTimeout(function () {
					restartGame();
				}, 2000);
				return;
			}
			turnText.setText('AI Checkmate! Black King loses 2 lives! Threatening piece destroyed!');
			// Switch turns and continue game
			currentPlayer = 'white';
			LK.setTimeout(function () {
				turnText.setText('Your Turn');
				gameState = 'playing';
			}, 2000);
			return;
		}
	}
	if (validAIMoves.length === 0) return;
	// Advanced AI Strategy Implementation
	var bestMove = chooseBestAIMove(validAIMoves);
	if (bestMove) {
		// Check if this is a snake move and handle multi-move sequence
		if (bestMove.piece.pieceType === 'snake') {
			// Execute the move after a short delay
			LK.setTimeout(function () {
				movePiece(bestMove.piece, bestMove.toRow, bestMove.toCol);
				// If snake has more moves remaining and it's still the AI's turn, continue with AI moves
				if (currentSnakePiece && currentSnakePiece.pieceColor === 'black' && snakeMovesRemaining > 0 && currentPlayer === 'black') {
					// Delay before next snake move
					LK.setTimeout(function () {
						makeAIMove(); // Recursive call for next snake move
					}, 800);
				}
			}, 800);
		} else {
			// Execute regular move after a short delay
			LK.setTimeout(function () {
				movePiece(bestMove.piece, bestMove.toRow, bestMove.toCol);
			}, 800);
		}
	}
}
function isMoveThreatening(fromRow, fromCol, toRow, toCol, targetRow, targetCol) {
	// Simple check if move gets closer to target (used for king protection)
	var currentDistance = Math.abs(fromRow - targetRow) + Math.abs(fromCol - targetCol);
	var newDistance = Math.abs(toRow - targetRow) + Math.abs(toCol - targetCol);
	return newDistance < currentDistance;
}
function chooseBestAIMove(validMoves) {
	// Super Grandmaster AI - Perfect calculation depth and evaluation
	var bestMove = null;
	var bestScore = -100000;
	var calculationDepth = 5; // Deep calculation
	// Priority 1: Immediate checkmate (highest priority)
	var checkmateMove = findCheckmateInOne(validMoves);
	if (checkmateMove) {
		return checkmateMove;
	}
	// Priority 2: Prevent opponent checkmate threats
	var preventCheckmateMove = preventOpponentCheckmate(validMoves);
	if (preventCheckmateMove) {
		return preventCheckmateMove;
	}
	// Priority 3: Emergency king defense when in check
	if (isInCheck('black')) {
		var defensiveMove = findOptimalDefensiveMove(validMoves);
		if (defensiveMove) {
			return defensiveMove;
		}
	}
	// Priority 4: Princess elimination for maximum material gain
	var princessEliminationMove = findBestPrincessElimination();
	if (princessEliminationMove) {
		return princessEliminationMove;
	}
	// Priority 5: Deep tactical combinations
	var tacticalMove = findBestTacticalCombination(validMoves);
	if (tacticalMove) {
		return tacticalMove;
	}
	// Priority 6: Advanced positional play with perfect evaluation
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		var score = evaluateMovePerfectly(move, calculationDepth);
		if (score > bestScore) {
			bestScore = score;
			bestMove = move;
		}
	}
	return bestMove || validMoves[0];
}
function findCheckmateMove(validMoves) {
	// Look for moves that can checkmate the opponent
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (simulateMove(move, function () {
			return isCheckmate('white');
		})) {
			return move;
		}
	}
	return null;
}
function findBestCapture(validMoves) {
	var bestCapture = null;
	var bestValue = 0;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		var targetPiece = getPieceAt(move.toRow, move.toCol);
		if (targetPiece && targetPiece.pieceColor === 'white') {
			var captureValue = getPieceValue(targetPiece.pieceType);
			// Prioritize king captures highly
			if (targetPiece.pieceType === 'king') {
				captureValue = 1000;
			}
			if (captureValue > bestValue) {
				bestValue = captureValue;
				bestCapture = move;
			}
		}
	}
	return bestCapture;
}
function shouldTakeCapture(captureMove) {
	// Analyze if capture is safe by looking ahead 2 moves
	var isSafe = simulateMove(captureMove, function () {
		// Check if the capturing piece can be counter-captured
		var capturedPosition = {
			row: captureMove.toRow,
			col: captureMove.toCol
		};
		var opponentMoves = getAllValidMoves('white');
		for (var i = 0; i < opponentMoves.length; i++) {
			var counterMove = opponentMoves[i];
			if (counterMove.toRow === capturedPosition.row && counterMove.toCol === capturedPosition.col) {
				var counterValue = getPieceValue(counterMove.piece.pieceType);
				var captureValue = getPieceValue(getPieceAt(captureMove.toRow, captureMove.toCol).pieceType);
				// Only take if gain is worth the risk
				return captureValue > counterValue;
			}
		}
		return true; // Safe capture
	});
	return isSafe;
}
function findTacticalMove(validMoves) {
	// Look for moves that create pressure or tactical advantages
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		// Check if move puts opponent in check
		if (simulateMove(move, function () {
			return isInCheck('white');
		})) {
			return move;
		}
		// Check if move creates fork or pin opportunities
		if (createsFork(move) || createsPin(move)) {
			return move;
		}
	}
	return null;
}
function findWithdrawMove(validMoves) {
	// Sometimes withdraw valuable pieces when under threat
	var valuablePieces = [];
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === 'black' && (piece.pieceType === 'princess' || piece.pieceType === 'queen' || piece.pieceType === 'snake' || piece.pieceType === 'rook')) {
			if (isPieceUnderThreat(piece)) {
				valuablePieces.push(piece);
			}
		}
	}
	for (var i = 0; i < valuablePieces.length; i++) {
		var piece = valuablePieces[i];
		for (var j = 0; j < validMoves.length; j++) {
			var move = validMoves[j];
			if (move.piece === piece && !isPieceUnderThreatAt(piece, move.toRow, move.toCol)) {
				// Use knight to create pressure occasionally
				if (Math.random() < 0.3 && piece.pieceType === 'knight') {
					if (createsPressure(move)) {
						return move;
					}
				}
				return move; // Safe withdrawal
			}
		}
	}
	return null;
}
function findSafePositionalMove(validMoves) {
	// Choose a move that improves position without risk
	var safeMoves = [];
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (!isPieceUnderThreatAt(move.piece, move.toRow, move.toCol)) {
			safeMoves.push(move);
		}
	}
	if (safeMoves.length > 0) {
		return safeMoves[Math.floor(Math.random() * safeMoves.length)];
	}
	return validMoves[Math.floor(Math.random() * validMoves.length)];
}
function simulateMove(move, testFunction) {
	// Temporarily execute move and test condition
	var originalRow = move.piece.row;
	var originalCol = move.piece.col;
	var capturedPiece = getPieceAt(move.toRow, move.toCol);
	// Make temporary move
	gameBoard[originalRow][originalCol] = null;
	gameBoard[move.toRow][move.toCol] = move.piece;
	move.piece.row = move.toRow;
	move.piece.col = move.toCol;
	var result = testFunction();
	// Restore position
	move.piece.row = originalRow;
	move.piece.col = originalCol;
	gameBoard[originalRow][originalCol] = move.piece;
	gameBoard[move.toRow][move.toCol] = capturedPiece;
	return result;
}
function isPieceUnderThreat(piece) {
	var whitePieces = pieces.filter(function (p) {
		return p.pieceColor === 'white';
	});
	for (var i = 0; i < whitePieces.length; i++) {
		if (whitePieces[i].canMoveTo(piece.row, piece.col)) {
			return true;
		}
	}
	return false;
}
function isPieceUnderThreatAt(piece, row, col) {
	var whitePieces = pieces.filter(function (p) {
		return p.pieceColor === 'white';
	});
	for (var i = 0; i < whitePieces.length; i++) {
		if (whitePieces[i].canMoveTo(row, col)) {
			return true;
		}
	}
	return false;
}
function createsFork(move) {
	// Check if move attacks two or more enemy pieces
	var attackCount = 0;
	var whitePieces = pieces.filter(function (p) {
		return p.pieceColor === 'white';
	});
	return simulateMove(move, function () {
		for (var i = 0; i < whitePieces.length; i++) {
			if (move.piece.canMoveTo(whitePieces[i].row, whitePieces[i].col)) {
				attackCount++;
			}
		}
		return attackCount >= 2;
	});
}
function createsPin(move) {
	// Simplified pin detection - attacks piece that's protecting the king
	var whiteKing = findKing('white');
	if (!whiteKing) return false;
	return simulateMove(move, function () {
		var targetPiece = getPieceAt(move.toRow, move.toCol);
		if (targetPiece && targetPiece.pieceColor === 'white') {
			// Check if removing this piece would expose king
			var originalRow = targetPiece.row;
			var originalCol = targetPiece.col;
			gameBoard[originalRow][originalCol] = null;
			var exposesKing = move.piece.canMoveTo(whiteKing.row, whiteKing.col);
			gameBoard[originalRow][originalCol] = targetPiece;
			return exposesKing;
		}
		return false;
	});
}
function createsPressure(move) {
	// Check if move creates pressure on opponent's position
	var pressureScore = 0;
	var whitePieces = pieces.filter(function (p) {
		return p.pieceColor === 'white';
	});
	return simulateMove(move, function () {
		for (var i = 0; i < whitePieces.length; i++) {
			var piece = whitePieces[i];
			if (move.piece.canMoveTo(piece.row, piece.col)) {
				pressureScore += getPieceValue(piece.pieceType);
			}
		}
		return pressureScore > 3; // Creates meaningful pressure
	});
}
function findHighValueCapture(validMoves) {
	// AI prioritizes capturing high value pieces with any piece
	var bestCapture = null;
	var bestPriority = 0;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		var targetPiece = getPieceAt(move.toRow, move.toCol);
		if (targetPiece && targetPiece.pieceColor === 'white') {
			// Prioritize capturing high value pieces normally
			var priority = getPieceValue(targetPiece.pieceType);
			if (priority > bestPriority) {
				bestPriority = priority;
				bestCapture = move;
			}
		}
	}
	return bestCapture;
}
function findPoisonOpportunity(validMoves) {
	// AI uses snake to move closer to enemy pieces protecting the king to poison them
	var whiteKing = findKing('white');
	if (!whiteKing) return null;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (move.piece.pieceType === 'snake') {
			// Check if this snake move would poison pieces near the white king
			var kingProtectors = getKingProtectors('white');
			if (kingProtectors.length > 0) {
				// Check if moving snake to this position would poison any king protectors
				var wouldPoisonProtector = simulateMove(move, function () {
					var poisonPositions = [{
						row: move.toRow - 1,
						col: move.toCol - 1
					}, {
						row: move.toRow - 1,
						col: move.toCol
					}, {
						row: move.toRow - 1,
						col: move.toCol + 1
					}, {
						row: move.toRow,
						col: move.toCol - 1
					}, {
						row: move.toRow,
						col: move.toCol + 1
					}, {
						row: move.toRow + 1,
						col: move.toCol - 1
					}, {
						row: move.toRow + 1,
						col: move.toCol
					}, {
						row: move.toRow + 1,
						col: move.toCol + 1
					}];
					for (var j = 0; j < poisonPositions.length; j++) {
						var pos = poisonPositions[j];
						if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
							var pieceAtPos = getPieceAt(pos.row, pos.col);
							if (pieceAtPos && pieceAtPos.pieceColor === 'white') {
								for (var k = 0; k < kingProtectors.length; k++) {
									if (kingProtectors[k] === pieceAtPos) {
										return true;
									}
								}
							}
						}
					}
					return false;
				});
				if (wouldPoisonProtector) {
					return move;
				}
			}
		}
	}
	return null;
}
function getKingProtectors(color) {
	// Find pieces that are protecting the king
	var king = findKing(color);
	if (!king) return [];
	var protectors = [];
	var enemyColor = color === 'white' ? 'black' : 'white';
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === color && piece !== king) {
			// Check if removing this piece would expose king to attack
			var originalRow = piece.row;
			var originalCol = piece.col;
			gameBoard[originalRow][originalCol] = null;
			var exposesKing = false;
			for (var j = 0; j < pieces.length; j++) {
				var enemyPiece = pieces[j];
				if (enemyPiece.pieceColor === enemyColor && enemyPiece.canMoveTo(king.row, king.col)) {
					exposesKing = true;
					break;
				}
			}
			gameBoard[originalRow][originalCol] = piece;
			if (exposesKing) {
				protectors.push(piece);
			}
		}
	}
	return protectors;
}
function canEscapeCheck(piece, newRow, newCol) {
	// Simulate the move to see if it gets the king out of check
	var originalRow = piece.row;
	var originalCol = piece.col;
	var capturedPiece = getPieceAt(newRow, newCol);
	// Make temporary move
	gameBoard[originalRow][originalCol] = null;
	gameBoard[newRow][newCol] = piece;
	piece.row = newRow;
	piece.col = newCol;
	// Check if still in check after move
	var stillInCheck = isInCheck(piece.pieceColor);
	// Restore original position
	piece.row = originalRow;
	piece.col = originalCol;
	gameBoard[originalRow][originalCol] = piece;
	gameBoard[newRow][newCol] = capturedPiece;
	return !stillInCheck;
}
function isKingSafeAt(king, newRow, newCol) {
	// Check if king would be safe at this position
	var originalRow = king.row;
	var originalCol = king.col;
	var capturedPiece = getPieceAt(newRow, newCol);
	// Temporarily move king to test position
	gameBoard[originalRow][originalCol] = null;
	gameBoard[newRow][newCol] = king;
	king.row = newRow;
	king.col = newCol;
	// Check if king would be in check at new position (including snake threats)
	var wouldBeInCheck = isInCheck(king.pieceColor);
	// Additional check specifically for snake multi-move threats
	if (!wouldBeInCheck) {
		wouldBeInCheck = isKingThreatenedBySnake(king, newRow, newCol);
	}
	// Restore original position
	king.row = originalRow;
	king.col = originalCol;
	gameBoard[originalRow][originalCol] = king;
	gameBoard[newRow][newCol] = capturedPiece;
	return !wouldBeInCheck;
}
function hasValidEscapeMoves(color) {
	// Check if color has any valid moves when in check, considering snake threats
	var king = findKing(color);
	if (!king) return false;
	// Check all possible king moves
	for (var dr = -1; dr <= 1; dr++) {
		for (var dc = -1; dc <= 1; dc++) {
			if (dr === 0 && dc === 0) continue;
			var newRow = king.row + dr;
			var newCol = king.col + dc;
			if (newRow >= 0 && newRow < 8 && newCol >= 0 && newCol < 16) {
				var targetPiece = getPieceAt(newRow, newCol);
				if (!targetPiece || targetPiece.pieceColor !== color) {
					if (isKingSafeAt(king, newRow, newCol)) {
						return true; // Found a safe escape square
					}
				}
			}
		}
	}
	// Check if any other piece can block or capture to protect king
	var allMoves = getAllValidMoves(color);
	return allMoves.length > 0;
}
function findThreateningPiece(king) {
	// Find the piece that is threatening the king, including snake multi-move threats
	if (!king) return null;
	// Check immediate threats first
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor !== king.pieceColor && piece.canMoveTo(king.row, king.col)) {
			return piece;
		}
	}
	// Check for snake multi-move threats
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceType === 'snake' && piece.pieceColor !== king.pieceColor && !piece.snakeOnCooldown) {
			if (canSnakeReachPosition(piece, king.row, king.col)) {
				return piece; // Snake can reach king position
			}
		}
	}
	return null;
}
function formatTime(milliseconds) {
	var totalSeconds = Math.max(0, Math.floor(milliseconds / 1000));
	var minutes = Math.floor(totalSeconds / 60);
	var seconds = totalSeconds % 60;
	return minutes + ':' + (seconds < 10 ? '0' : '') + seconds;
}
function updateTimerDisplay() {
	whiteTimerText.setText(formatTime(whiteTimeRemaining));
	blackTimerText.setText(formatTime(blackTimeRemaining));
}
function startTimer() {
	if (timerInterval) {
		LK.clearInterval(timerInterval);
	}
	currentTurnStartTime = Date.now();
	gameStartTime = gameStartTime || currentTurnStartTime;
	timerInterval = LK.setInterval(function () {
		if (gameState === 'playing' || gameState === 'check') {
			var now = Date.now();
			var elapsed = now - currentTurnStartTime;
			if (currentPlayer === 'white') {
				whiteTimeRemaining -= elapsed;
				if (whiteTimeRemaining <= 0) {
					whiteTimeRemaining = 0;
					handleTimeOut('white');
					return;
				}
			} else {
				blackTimeRemaining -= elapsed;
				if (blackTimeRemaining <= 0) {
					blackTimeRemaining = 0;
					handleTimeOut('black');
					return;
				}
			}
			updateTimerDisplay();
			currentTurnStartTime = now;
		}
	}, 100);
}
function stopTimer() {
	if (timerInterval) {
		LK.clearInterval(timerInterval);
		timerInterval = null;
	}
}
function handleTimeOut(player) {
	stopTimer();
	var winner = player === 'white' ? 'Black' : 'White';
	turnText.setText(winner + ' Wins! ' + (player === 'white' ? 'White' : 'Black') + ' ran out of time!');
	gameState = 'gameover';
	LK.setTimeout(function () {
		restartGame();
	}, 2000);
}
function updateLivesDisplay() {
	// Update text
	whiteLivesText.setText('Your Lives: ' + whiteKingLives);
	blackLivesText.setText('Enemy Lives: ' + blackKingLives);
	// Update visual hearts with smooth animation
	for (var i = 0; i < 4; i++) {
		if (i < whiteKingLives) {
			tween(whiteLivesHearts[i], {
				alpha: 1.0,
				tint: 0xFFFFFF
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		} else {
			tween(whiteLivesHearts[i], {
				alpha: 0.3,
				tint: 0x666666
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
		if (i < blackKingLives) {
			tween(blackLivesHearts[i], {
				alpha: 1.0,
				tint: 0xFF0000
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		} else {
			tween(blackLivesHearts[i], {
				alpha: 0.3,
				tint: 0x666666
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
	}
}
function updateStaminaDisplay() {
	// Update stamina bar visual indicators
	for (var i = 0; i < maxStaminaPoints; i++) {
		if (i < staminaPoints) {
			tween(staminaBars[i], {
				alpha: 1.0,
				tint: 0xff69b4
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		} else {
			tween(staminaBars[i], {
				alpha: 0.3,
				tint: 0x666666
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
	}
	// Update AI stamina bar visual indicators
	for (var i = 0; i < aiMaxStaminaPoints; i++) {
		if (i < aiStaminaPoints) {
			tween(aiStaminaBars[i], {
				alpha: 1.0,
				tint: 0xff69b4
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		} else {
			tween(aiStaminaBars[i], {
				alpha: 0.3,
				tint: 0x666666
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
	}
	// Update Queen and Snake pink square highlighting
	updateQueenSnakePinkSquares();
}
function activateAbility(color, remainingLives) {
	var abilityName = '';
	var abilityEffect = '';
	switch (remainingLives) {
		case 3:
			abilityName = 'Shield Boost';
			abilityEffect = 'All pieces gain temporary protection';
			// Flash all pieces of that color green to show protection
			flashPiecesOfColor(color, 0x00FF00, 1000);
			break;
		case 2:
			abilityName = 'Speed Rush';
			abilityEffect = 'Pieces move faster for next 3 turns';
			// Make pieces glow blue to show speed boost
			flashPiecesOfColor(color, 0x0099FF, 1500);
			break;
		case 1:
			abilityName = 'Rage Mode';
			abilityEffect = 'Double damage on next capture';
			// Make pieces glow red to show rage
			flashPiecesOfColor(color, 0xFF3333, 2000);
			break;
		case 0:
			abilityName = 'Final Stand';
			abilityEffect = 'Last desperate attempt';
			break;
	}
	// Show ability activation message
	var message = color.charAt(0).toUpperCase() + color.slice(1) + ' Ability: ' + abilityName;
	var abilityText = new Text2(message, {
		size: 60,
		fill: color === 'white' ? 0xFFFFFF : 0xFF0000
	});
	abilityText.anchor.set(0.5, 0.5);
	abilityText.x = 1024;
	abilityText.y = 1200;
	game.addChild(abilityText);
	// Start with small scale and animate in
	abilityText.scaleX = 0.5;
	abilityText.scaleY = 0.5;
	abilityText.alpha = 0;
	// Animate ability text entrance
	tween(abilityText, {
		scaleX: 1.0,
		scaleY: 1.0,
		alpha: 1.0
	}, {
		duration: 300,
		easing: tween.bounceOut,
		onFinish: function onFinish() {
			// Hold for a moment then fade out
			LK.setTimeout(function () {
				tween(abilityText, {
					scaleX: 1.2,
					scaleY: 1.2,
					alpha: 0,
					y: abilityText.y - 50
				}, {
					duration: 1000,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						abilityText.destroy();
					}
				});
			}, 1000);
		}
	});
}
function flashPiecesOfColor(color, flashColor, duration) {
	for (var i = 0; i < pieces.length; i++) {
		if (pieces[i].pieceColor === color) {
			LK.effects.flashObject(pieces[i], flashColor, duration);
		}
	}
}
function applyPoisonBehindSnake(snake, oldRow, oldCol) {
	// Apply poison to pieces around the snake's previous position (behind it)
	var poisonPositions = [{
		row: oldRow - 1,
		col: oldCol - 1
	}, {
		row: oldRow - 1,
		col: oldCol
	}, {
		row: oldRow - 1,
		col: oldCol + 1
	}, {
		row: oldRow,
		col: oldCol - 1
	}, {
		row: oldRow,
		col: oldCol + 1
	}, {
		row: oldRow + 1,
		col: oldCol - 1
	}, {
		row: oldRow + 1,
		col: oldCol
	}, {
		row: oldRow + 1,
		col: oldCol + 1
	}];
	for (var i = 0; i < poisonPositions.length; i++) {
		var pos = poisonPositions[i];
		if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
			var pieceAtPos = getPieceAt(pos.row, pos.col);
			if (pieceAtPos && pieceAtPos.pieceColor !== snake.pieceColor) {
				// Kings are immune to poison - skip poisoning kings completely
				if (pieceAtPos.pieceType === 'king') {
					continue; // Skip poisoning kings
				}
				// Snake cannot poison the king
				if (pieceAtPos.pieceType === 'king') {
					continue; // Skip poisoning kings
				}
				pieceAtPos.applyPoison(3); // Poison for 3 turns
				// Flash piece red to show poison application with proper closure
				var targetPiece = pieceAtPos; // Capture the piece in closure
				tween(targetPiece, {
					tint: 0xff0000
				}, {
					duration: 200,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						tween(targetPiece, {
							tint: 0xff6666
						}, {
							duration: 200,
							easing: tween.easeOut
						});
					}
				});
			}
		}
	}
}
function restartGame() {
	// Stop timer when game ends
	stopTimer();
	// Determine winner before clearing state
	var winner = whiteKingLives <= 0 ? 'Black' : 'White';
	// Show win screen with team name
	showWinScreen(winner);
}
function showWinScreen(winningTeam) {
	// Create win screen overlay
	var winScreen = new Container();
	game.addChild(winScreen);
	// Semi-transparent background
	var background = LK.getAsset('darkSquare', {
		anchorX: 0,
		anchorY: 0,
		alpha: 0.8,
		scaleX: 20,
		scaleY: 25
	});
	background.x = 0;
	background.y = 0;
	winScreen.addChild(background);
	// Win text
	var winText = new Text2(winningTeam + (winningTeam === 'Black' ? ' side won.' : ' Team Wins!'), {
		size: 120,
		fill: winningTeam === 'White' ? 0xFFFFFF : 0xFF0000
	});
	winText.anchor.set(0.5, 0.5);
	winText.x = 1024;
	winText.y = 1366;
	winScreen.addChild(winText);
	// Animate win text
	tween(winText, {
		scaleX: 1.2,
		scaleY: 1.2
	}, {
		duration: 500,
		easing: tween.easeOut
	});
	// Auto-restart after 1 second
	LK.setTimeout(function () {
		winScreen.destroy();
		actualRestartGame();
	}, 1000);
}
function shufflePiecesForNewRound(pieceSetup) {
	// Create array of non-pawn, non-king pieces for swapping
	var swappablePieces = ['summoner', 'knight', 'bishop', 'queen', 'queen', 'knight', 'rook', 'jester', 'knight', 'bishop', 'princess', 'princess', 'snake', 'jester'];
	// Create shuffled version of swappable pieces for each side
	var shuffledPiecesBlack = swappablePieces.slice(); // Copy array for black
	var shuffledPiecesWhite = swappablePieces.slice(); // Copy array for white
	// Shuffle black pieces
	for (var i = shuffledPiecesBlack.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = shuffledPiecesBlack[i];
		shuffledPiecesBlack[i] = shuffledPiecesBlack[j];
		shuffledPiecesBlack[j] = temp;
	}
	// Shuffle white pieces separately 
	for (var i = shuffledPiecesWhite.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = shuffledPiecesWhite[i];
		shuffledPiecesWhite[i] = shuffledPiecesWhite[j];
		shuffledPiecesWhite[j] = temp;
	}
	// Replace pieces in setup while keeping king in center
	var blackPieceIndex = 0;
	var whitePieceIndex = 0;
	// Shuffle black pieces (top row)
	for (var col = 0; col < 16; col++) {
		if (pieceSetup[0][col] !== 'king' && pieceSetup[0][col] !== 'pawn') {
			pieceSetup[0][col] = shuffledPiecesBlack[blackPieceIndex % shuffledPiecesBlack.length];
			blackPieceIndex++;
		}
	}
	// Create white setup by shuffling pieces for bottom row (this will be used in piece creation)
	var whiteSetup = pieceSetup[0].slice(); // Copy the structure
	for (var col = 0; col < 16; col++) {
		if (whiteSetup[col] !== 'king' && whiteSetup[col] !== 'pawn') {
			whiteSetup[col] = shuffledPiecesWhite[whitePieceIndex % shuffledPiecesWhite.length];
			whitePieceIndex++;
		}
	}
	// Store white setup for use in piece creation
	pieceSetup.whiteSetup = whiteSetup;
	return pieceSetup;
}
function randomlySwapNonPawnPieces(pieceSetup) {
	// Keep the original function for backward compatibility
	return shufflePiecesForNewRound(pieceSetup);
}
function actualRestartGame() {
	// Clear all pieces
	for (var i = 0; i < pieces.length; i++) {
		pieces[i].destroy();
	}
	pieces = [];
	// Clear highlights
	clearHighlights();
	// Clear pink squares
	for (var i = 0; i < queenSnakePinkSquares.length; i++) {
		if (!queenSnakePinkSquares[i].destroyed) {
			queenSnakePinkSquares[i].destroy();
		}
	}
	queenSnakePinkSquares = [];
	// Clear king squares
	if (kingSquare) {
		kingSquare.destroy();
		kingSquare = null;
	}
	if (blackKingSquare) {
		blackKingSquare.destroy();
		blackKingSquare = null;
	}
	// Reset game state
	currentPlayer = 'white';
	selectedPiece = null;
	validMoves = [];
	dragNode = null;
	gameState = 'playing';
	whiteKingLives = 4;
	blackKingLives = 4;
	currentSnakePiece = null;
	snakeMovesRemaining = 0;
	activeSnakePiece = null; // Reset active snake
	// Reset stamina system
	staminaPoints = 1;
	aiStaminaPoints = 1;
	// Clear stamina consumer tracking
	window.whiteStaminaConsumers = [];
	window.blackStaminaConsumers = [];
	updateStaminaDisplay();
	// Reset timer variables
	whiteTimeRemaining = 60000;
	blackTimeRemaining = 60000;
	gameStartTime = null;
	currentTurnStartTime = null;
	// Snake cooldowns will be reset when new pieces are created - no need to access destroyed pieces
	updateLivesDisplay();
	turnText.setText('Your Turn');
	// Clear board
	for (var row = 0; row < 8; row++) {
		for (var col = 0; col < 16; col++) {
			gameBoard[row][col] = null;
		}
	}
	// Create base piece setup and shuffle non-pawn pieces for new round
	var basePieceSetup = [['summoner', 'knight', 'bishop', 'queen', 'king', 'queen', 'bishop', 'knight', 'rook', 'jester', 'knight', 'bishop', 'princess', 'princess', 'snake', 'jester'], ['pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn', 'pawn']];
	var pieceSetup = shufflePiecesForNewRound(basePieceSetup);
	// Create black pieces
	for (var row = 0; row < 2; row++) {
		for (var col = 0; col < 16; col++) {
			var piece = new ChessPiece(pieceSetup[row][col], 'black', row, col);
			pieces.push(piece);
			gameBoard[row][col] = piece;
			game.addChild(piece);
			piece.updatePosition();
		}
	}
	// Create white pieces
	for (var row = 6; row < 8; row++) {
		for (var col = 0; col < 16; col++) {
			var pieceType = row === 6 ? 'pawn' : pieceSetup.whiteSetup[col];
			var piece = new ChessPiece(pieceType, 'white', row, col);
			pieces.push(piece);
			gameBoard[row][col] = piece;
			game.addChild(piece);
			piece.updatePosition();
		}
	}
	// Initialize king square after restart
	updateKingSquare();
	// Restart timer
	updateTimerDisplay();
	startTimer();
}
game.down = function (x, y, obj) {
	if (gameState !== 'playing' && gameState !== 'check') return;
	if (currentPlayer !== 'white') return; // Only allow white player to move pieces
	var square = getSquareFromPosition(x, y);
	if (!square) return;
	var clickedPiece = getPieceAt(square.row, square.col);
	// If we have a selected piece, try to move it
	if (selectedPiece) {
		// Check if clicked on valid move
		var isValidMove = false;
		for (var i = 0; i < validMoves.length; i++) {
			if (validMoves[i].row === square.row && validMoves[i].col === square.col) {
				isValidMove = true;
				break;
			}
		}
		if (isValidMove) {
			movePiece(selectedPiece, square.row, square.col);
			clearHighlights();
			selectedPiece = null;
			return;
		} else {
			// Invalid move or clicking elsewhere - clear selection
			clearHighlights();
			selectedPiece = null;
		}
	}
	// Handle princess elimination mode
	if (selectedPiece && selectedPiece.pieceType === 'princess' && selectedPiece.princessEliminationMode) {
		if (clickedPiece && clickedPiece.pieceColor !== selectedPiece.pieceColor) {
			// Check if target is within princess's elimination range (2 squares in any direction)
			var rowDiff = Math.abs(clickedPiece.row - selectedPiece.row);
			var colDiff = Math.abs(clickedPiece.col - selectedPiece.col);
			var maxRange = Math.max(rowDiff, colDiff);
			if (maxRange <= 2 && selectedPiece.princessSelectedTargets.indexOf(clickedPiece) === -1) {
				selectedPiece.princessSelectedTargets.push(clickedPiece);
				selectedPiece.princessTargetsSelected++;
				highlightSquare(clickedPiece.row, clickedPiece.col, 'blue');
				turnText.setText('Princess selected target ' + selectedPiece.princessTargetsSelected + '/2');
				if (selectedPiece.princessTargetsSelected === 2) {
					// Execute elimination
					for (var i = 0; i < selectedPiece.princessSelectedTargets.length; i++) {
						var target = selectedPiece.princessSelectedTargets[i];
						for (var j = 0; j < pieces.length; j++) {
							if (pieces[j] === target) {
								gameBoard[target.row][target.col] = null;
								target.destroy();
								pieces.splice(j, 1);
								break;
							}
						}
					}
					LK.getSound('capture').play();
					// Reset princess state and switch turns
					selectedPiece.princessEliminationMode = false;
					selectedPiece.princessTargetsSelected = 0;
					selectedPiece.princessSelectedTargets = [];
					clearHighlights();
					selectedPiece = null;
					currentPlayer = currentPlayer === 'white' ? 'black' : 'white';
					turnText.setText(currentPlayer.charAt(0).toUpperCase() + currentPlayer.slice(1) + '\'s Turn');
					if (currentPlayer === 'black') {
						makeAIMove();
					}
					return;
				}
			}
		}
		return;
	}
	// If there's an active snake continuing its moves, only allow that snake to be selected
	if (activeSnakePiece && activeSnakePiece.pieceColor === 'white' && snakeMovesRemaining > 0) {
		if (clickedPiece === activeSnakePiece) {
			selectedPiece = activeSnakePiece;
			dragNode = activeSnakePiece;
			showValidMoves(activeSnakePiece);
		}
		return;
	}
	// Normal piece selection - only allow white pieces to be selected
	if (clickedPiece && clickedPiece.pieceColor === 'white') {
		// Add selection animation
		tween(clickedPiece, {
			scaleX: 1.1,
			scaleY: 1.1
		}, {
			duration: 150,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				tween(clickedPiece, {
					scaleX: 1.0,
					scaleY: 1.0
				}, {
					duration: 100,
					easing: tween.easeOut
				});
			}
		});
		// Check for princess double-click to enter elimination mode
		if (clickedPiece.pieceType === 'princess' && selectedPiece === clickedPiece) {
			clickedPiece.princessEliminationMode = true;
			clickedPiece.princessTargetsSelected = 0;
			clickedPiece.princessSelectedTargets = [];
			clearHighlights();
			highlightSquare(clickedPiece.row, clickedPiece.col, 'blue');
			// Show elimination range (2 squares in all directions)
			for (var dr = -2; dr <= 2; dr++) {
				for (var dc = -2; dc <= 2; dc++) {
					if (dr === 0 && dc === 0) continue; // Skip princess's own square
					var targetRow = clickedPiece.row + dr;
					var targetCol = clickedPiece.col + dc;
					if (targetRow >= 0 && targetRow < 8 && targetCol >= 0 && targetCol < 16) {
						var targetPiece = getPieceAt(targetRow, targetCol);
						if (targetPiece && targetPiece.pieceColor !== clickedPiece.pieceColor) {
							highlightSquare(targetRow, targetCol, 'green'); // Show valid targets in green
						} else if (!targetPiece) {
							highlightSquare(targetRow, targetCol, 'yellow'); // Show empty squares in elimination range
						}
					}
				}
			}
			turnText.setText('Princess Elimination Mode: Select 2 enemies within 2 squares');
			return;
		}
		// Select the piece and show valid moves
		selectedPiece = clickedPiece;
		dragNode = clickedPiece;
		showValidMoves(clickedPiece);
	}
};
game.move = function (x, y, obj) {
	if (dragNode) {
		dragNode.x = x;
		dragNode.y = y;
	}
};
game.up = function (x, y, obj) {
	if (dragNode && selectedPiece) {
		var square = getSquareFromPosition(x, y);
		if (square) {
			var isValidMove = false;
			for (var i = 0; i < validMoves.length; i++) {
				if (validMoves[i].row === square.row && validMoves[i].col === square.col) {
					isValidMove = true;
					break;
				}
			}
			if (isValidMove) {
				movePiece(selectedPiece, square.row, square.col);
				clearHighlights();
				selectedPiece = null;
			} else {
				selectedPiece.updatePosition(true);
			}
		} else {
			selectedPiece.updatePosition(true);
		}
	}
	dragNode = null;
};
game.update = function () {
	// Game logic runs automatically through event handlers
};
function findAggressiveSnakeMove(validMoves) {
	// AI uses snake aggressively like a queen for attacks and board control
	var bestSnakeMove = null;
	var bestValue = 0;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (move.piece.pieceType === 'snake') {
			var moveValue = 0;
			// Prioritize captures with snake
			var targetPiece = getPieceAt(move.toRow, move.toCol);
			if (targetPiece && targetPiece.pieceColor === 'white') {
				moveValue += getPieceValue(targetPiece.pieceType) * 2; // Double weight for snake captures
			}
			// Prioritize moves that put enemy king in check
			if (simulateMove(move, function () {
				return isInCheck('white');
			})) {
				moveValue += 15; // High priority for check moves
			}
			// Prioritize moves that control center squares
			var centerDistance = Math.abs(move.toRow - 3.5) + Math.abs(move.toCol - 7.5);
			moveValue += (16 - centerDistance) * 0.5; // Favor central positions
			// Prioritize moves that attack multiple pieces
			var attackCount = 0;
			var whitePieces = pieces.filter(function (p) {
				return p.pieceColor === 'white';
			});
			simulateMove(move, function () {
				for (var j = 0; j < whitePieces.length; j++) {
					if (move.piece.canMoveTo(whitePieces[j].row, whitePieces[j].col)) {
						attackCount++;
					}
				}
				return false;
			});
			moveValue += attackCount * 3; // Bonus for forking
			// Avoid moves that put snake in immediate danger unless high value
			if (!isPieceUnderThreatAt(move.piece, move.toRow, move.toCol) || moveValue > 10) {
				if (moveValue > bestValue) {
					bestValue = moveValue;
					bestSnakeMove = move;
				}
			}
		}
	}
	return bestSnakeMove;
}
function findSnakeTacticalMove(validMoves) {
	// Find tactical moves specifically for snake pieces - aggressive positioning
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (move.piece.pieceType === 'snake') {
			// Snake moves to attack enemy pieces near their king
			var whiteKing = findKing('white');
			if (whiteKing) {
				var distanceToKing = Math.abs(move.toRow - whiteKing.row) + Math.abs(move.toCol - whiteKing.col);
				// Prioritize moves that get snake closer to enemy king area
				if (distanceToKing <= 3) {
					var currentDistance = Math.abs(move.piece.row - whiteKing.row) + Math.abs(move.piece.col - whiteKing.col);
					if (distanceToKing < currentDistance) {
						return move; // Move closer to king
					}
				}
			}
			// Snake moves to create pressure on enemy back rank
			if (move.toRow <= 2) {
				// Near enemy back rank
				return move;
			}
			// Snake moves to control key squares
			var keySquares = [{
				row: 3,
				col: 7
			}, {
				row: 3,
				col: 8
			}, {
				row: 4,
				col: 7
			}, {
				row: 4,
				col: 8
			}]; // Center control
			for (var j = 0; j < keySquares.length; j++) {
				if (move.toRow === keySquares[j].row && move.toCol === keySquares[j].col) {
					return move;
				}
			}
		}
	}
	return null;
}
function findDefensivePrincessMove(validMoves) {
	// AI uses princess and queen more timidly for solid compression and defensive checkmate setups
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (move.piece.pieceType === 'princess' || move.piece.pieceType === 'queen') {
			// Queen stays back and supports other pieces
			var backRankSafety = move.toRow <= 2; // Stay in back ranks
			if (backRankSafety) {
				// Quenn supports checkmate patterns by controlling escape squares
				var whiteKing = findKing('white');
				if (whiteKing) {
					// Check if queen move controls king's escape squares
					var controlsEscape = false;
					var escapeSquares = [{
						row: whiteKing.row - 1,
						col: whiteKing.col - 1
					}, {
						row: whiteKing.row - 1,
						col: whiteKing.col
					}, {
						row: whiteKing.row - 1,
						col: whiteKing.col + 1
					}, {
						row: whiteKing.row,
						col: whiteKing.col - 1
					}, {
						row: whiteKing.row,
						col: whiteKing.col + 1
					}, {
						row: whiteKing.row + 1,
						col: whiteKing.col - 1
					}, {
						row: whiteKing.row + 1,
						col: whiteKing.col
					}, {
						row: whiteKing.row + 1,
						col: whiteKing.col + 1
					}];
					simulateMove(move, function () {
						for (var j = 0; j < escapeSquares.length; j++) {
							var escSquare = escapeSquares[j];
							if (escSquare.row >= 0 && escSquare.row < 8 && escSquare.col >= 0 && escSquare.col < 16) {
								if (move.piece.canMoveTo(escSquare.row, escSquare.col)) {
									controlsEscape = true;
									break;
								}
							}
						}
						return false;
					});
					if (controlsEscape) {
						return move; // Queen controls escape squares for checkmate
					}
				}
				// Queen defends other pieces
				var defendsAllies = false;
				simulateMove(move, function () {
					for (var j = 0; j < pieces.length; j++) {
						var ally = pieces[j];
						if (ally.pieceColor === 'black' && ally !== move.piece) {
							if (isPieceUnderThreat(ally)) {
								// Check if queen can defend this piece
								if (move.piece.canMoveTo(ally.row, ally.col)) {
									defendsAllies = true;
									break;
								}
							}
						}
					}
					return false;
				});
				if (defendsAllies) {
					return move; // Queen defends allies
				}
			}
			// Only make aggressive queen moves if very safe and high value
			var targetPiece = getPieceAt(move.toRow, move.toCol);
			if (targetPiece && targetPiece.pieceColor === 'white') {
				var captureValue = getPieceValue(targetPiece.pieceType);
				if (captureValue >= 5 && !isPieceUnderThreatAt(move.piece, move.toRow, move.toCol)) {
					return move; // Safe high-value capture only
				}
			}
		}
	}
	return null;
}
function isKingThreatenedBySnake(king, kingRow, kingCol) {
	// Check if any enemy snake can reach the king position through its multi-move capability
	var enemyColor = king.pieceColor === 'white' ? 'black' : 'white';
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceType === 'snake' && piece.pieceColor === enemyColor && !piece.snakeOnCooldown) {
			// Check if snake can reach king in 1-3 moves
			if (canSnakeReachPosition(piece, kingRow, kingCol)) {
				return true;
			}
		}
	}
	return false;
}
function canSnakeReachPosition(snake, targetRow, targetCol) {
	// Check if snake can reach target position within its 3-move sequence
	// This simulates the snake's complex movement pattern
	var visited = {};
	function canReachRecursive(currentRow, currentCol, movesLeft, moveType) {
		if (movesLeft === 0) return false;
		if (currentRow === targetRow && currentCol === targetCol) return true;
		var key = currentRow + ',' + currentCol + ',' + movesLeft + ',' + moveType;
		if (visited[key]) return false;
		visited[key] = true;
		// Generate possible moves based on snake move type
		var possibleMoves = [];
		if (moveType === 0) {
			// First move: straight lines only
			for (var dr = -1; dr <= 1; dr++) {
				for (var dc = -1; dc <= 1; dc++) {
					if (dr === 0 && dc === 0) continue;
					// Must be straight line movement
					if (dr === 0 || dc === 0 || Math.abs(dr) === Math.abs(dc)) {
						var newRow = currentRow + dr;
						var newCol = currentCol + dc;
						if (newRow >= 0 && newRow < 8 && newCol >= 0 && newCol < 16) {
							var piece = getPieceAt(newRow, newCol);
							if (!piece || piece.pieceColor !== snake.pieceColor) {
								possibleMoves.push({
									row: newRow,
									col: newCol,
									nextMoveType: 1
								});
							}
						}
					}
				}
			}
		} else if (moveType === 1) {
			// Second move: diagonal only
			for (var dr = -1; dr <= 1; dr++) {
				for (var dc = -1; dc <= 1; dc++) {
					if (Math.abs(dr) === Math.abs(dc) && Math.abs(dr) === 1) {
						var newRow = currentRow + dr;
						var newCol = currentCol + dc;
						if (newRow >= 0 && newRow < 8 && newCol >= 0 && newCol < 16) {
							var piece = getPieceAt(newRow, newCol);
							if (!piece || piece.pieceColor !== snake.pieceColor) {
								possibleMoves.push({
									row: newRow,
									col: newCol,
									nextMoveType: 2
								});
							}
						}
					}
				}
			}
		} else if (moveType === 2) {
			// Third move: any direction
			for (var dr = -1; dr <= 1; dr++) {
				for (var dc = -1; dc <= 1; dc++) {
					if (dr === 0 && dc === 0) continue;
					var newRow = currentRow + dr;
					var newCol = currentCol + dc;
					if (newRow >= 0 && newRow < 8 && newCol >= 0 && newCol < 16) {
						var piece = getPieceAt(newRow, newCol);
						if (!piece || piece.pieceColor !== snake.pieceColor) {
							possibleMoves.push({
								row: newRow,
								col: newCol,
								nextMoveType: 3
							});
						}
					}
				}
			}
		}
		// Try each possible move
		for (var j = 0; j < possibleMoves.length; j++) {
			var move = possibleMoves[j];
			if (canReachRecursive(move.row, move.col, movesLeft - 1, move.nextMoveType)) {
				return true;
			}
		}
		return false;
	}
	// Start with snake's current position and first move type
	return canReachRecursive(snake.row, snake.col, snake.maxSnakeMoves, 0);
}
function evaluateMovePerfectly(move, depth) {
	// Perfect evaluation with grandmaster-level understanding
	var score = 0;
	var piece = move.piece;
	var targetPiece = getPieceAt(move.toRow, move.toCol);
	// 1. Checkmate detection (perfect priority)
	if (simulateMove(move, function () {
		return isCheckmate('white');
	})) {
		return 50000; // Mate is always best
	}
	// 2. Prevent our own checkmate (critical)
	var opponentThreats = getAllValidMoves('white');
	var preventsCheckmate = false;
	for (var i = 0; i < opponentThreats.length; i++) {
		if (simulateMove(move, function () {
			return !simulateOpponentMove(opponentThreats[i], function () {
				return isCheckmate('black');
			});
		})) {
			preventsCheckmate = true;
			break;
		}
	}
	if (preventsCheckmate) score += 10000;
	// 3. Perfect material evaluation
	if (targetPiece && targetPiece.pieceColor === 'white') {
		var captureValue = getPieceValue(targetPiece.pieceType);
		var exchangeValue = calculatePerfectExchange(move, depth);
		score += exchangeValue * 100;
		// Grandmaster piece priorities
		if (targetPiece.pieceType === 'queen') score += 900;
		if (targetPiece.pieceType === 'princess') score += 800;
		if (targetPiece.pieceType === 'snake') score += 600;
		if (targetPiece.pieceType === 'rook') score += 500;
	}
	// 4. Perfect tactical pattern recognition
	score += evaluatePerfectTactics(move, depth);
	// 5. Strategic piece coordination
	score += evaluatePerfectStrategy(move);
	// 6. King attack precision
	score += evaluatePerfectKingAttack(move);
	// 7. Basic positional evaluation
	score += evaluatePositionalFactors(move);
	return score;
}
function calculatePerfectCoordination(move) {
	// Calculate how well pieces coordinate after this move
	var coordinationScore = 0;
	return simulateMove(move, function () {
		// Count pieces that support each other
		var supportingPairs = 0;
		var totalSupport = 0;
		for (var i = 0; i < pieces.length; i++) {
			var piece1 = pieces[i];
			if (piece1.pieceColor === 'black') {
				var supportCount = 0;
				for (var j = 0; j < pieces.length; j++) {
					var piece2 = pieces[j];
					if (piece2.pieceColor === 'black' && piece1 !== piece2) {
						// Check if piece2 defends piece1
						if (piece2.canMoveTo(piece1.row, piece1.col)) {
							supportCount++;
							totalSupport++;
						}
					}
				}
				if (supportCount > 0) {
					supportingPairs++;
				}
			}
		}
		// Calculate coordination bonuses
		coordinationScore += supportingPairs * 3; // Bonus for each supported piece
		coordinationScore += totalSupport * 2; // Bonus for total defensive connections
		// Special coordination patterns
		// Queen and rook coordination
		var blackQueens = pieces.filter(function (p) {
			return p.pieceColor === 'black' && p.pieceType === 'queen';
		});
		var blackRooks = pieces.filter(function (p) {
			return p.pieceColor === 'black' && p.pieceType === 'rook';
		});
		for (var i = 0; i < blackQueens.length; i++) {
			for (var j = 0; j < blackRooks.length; j++) {
				var rowDiff = Math.abs(blackQueens[i].row - blackRooks[j].row);
				var colDiff = Math.abs(blackQueens[i].col - blackRooks[j].col);
				if (rowDiff === 0 || colDiff === 0) {
					coordinationScore += 5; // Same rank/file coordination
				}
			}
		}
		// Bishop pair coordination
		var blackBishops = pieces.filter(function (p) {
			return p.pieceColor === 'black' && p.pieceType === 'bishop';
		});
		if (blackBishops.length >= 2) {
			coordinationScore += 8; // Bishop pair bonus
		}
		return coordinationScore;
	});
}
function calculatePerfectExchange(move, depth) {
	// Calculate exact exchange value with perfect accuracy
	var ourPiece = move.piece;
	var enemyPiece = getPieceAt(move.toRow, move.toCol);
	if (!enemyPiece) return 0;
	var exchangeSequence = [];
	var currentPos = {
		row: move.toRow,
		col: move.toCol
	};
	// Calculate all pieces that can recapture
	var recapturers = [];
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === 'white' && piece.canMoveTo(currentPos.row, currentPos.col)) {
			recapturers.push({
				piece: piece,
				value: getPieceValue(piece.pieceType)
			});
		}
	}
	// Sort by piece value (sacrifice lowest first)
	recapturers.sort(function (a, b) {
		return a.value - b.value;
	});
	var balance = getPieceValue(enemyPiece.pieceType);
	var attackerValue = getPieceValue(ourPiece.pieceType);
	// Perfect exchange calculation
	for (var i = 0; i < Math.min(recapturers.length, depth); i++) {
		if (i % 2 === 0) {
			balance -= attackerValue;
		} else {
			balance += recapturers[Math.floor(i / 2)].value;
		}
		attackerValue = i < recapturers.length ? recapturers[i].value : 0;
	}
	return balance;
}
function evaluatePerfectTactics(move, depth) {
	var score = 0;
	// Perfect fork detection
	var forkValue = calculatePerfectFork(move);
	score += forkValue * 50;
	// Perfect pin detection
	if (createsPerfectPin(move)) score += 200;
	// Perfect discovered attack
	if (createsPerfectDiscovery(move)) score += 250;
	// Perfect deflection
	if (createsPerfectDeflection(move)) score += 180;
	// Perfect skewer
	if (createsPerfectSkewer(move)) score += 220;
	return score;
}
function evaluatePerfectStrategy(move) {
	var score = 0;
	// Perfect piece coordination
	var coordinationValue = calculatePerfectCoordination(move);
	score += coordinationValue * 15;
	// Basic piece activity
	score += evaluatePositionalFactors(move) * 0.5;
	// Basic tactical patterns
	score += evaluateTacticalPatterns(move) * 0.8;
	return score;
}
function evaluatePerfectKingAttack(move) {
	var score = 0;
	var enemyKing = findKing('white');
	if (!enemyKing) return 0;
	return simulateMove(move, function () {
		var attackingPieces = 0;
		var controlledSquares = 0;
		// Count pieces attacking king area
		for (var i = 0; i < pieces.length; i++) {
			var piece = pieces[i];
			if (piece.pieceColor === 'black') {
				for (var dr = -1; dr <= 1; dr++) {
					for (var dc = -1; dc <= 1; dc++) {
						var kingArea = {
							row: enemyKing.row + dr,
							col: enemyKing.col + dc
						};
						if (kingArea.row >= 0 && kingArea.row < 8 && kingArea.col >= 0 && kingArea.col < 16) {
							if (piece.canMoveTo(kingArea.row, kingArea.col)) {
								controlledSquares++;
								if (dr === 0 && dc === 0) attackingPieces++;
							}
						}
					}
				}
			}
		}
		return attackingPieces * 30 + controlledSquares * 10;
	});
}
function countThreatsToKing(color) {
	var king = findKing(color);
	if (!king) return 0;
	var threats = 0;
	var enemyColor = color === 'white' ? 'black' : 'white';
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceColor === enemyColor && piece.canMoveTo(king.row, king.col)) {
			threats++;
		}
	}
	return threats;
}
function calculateExchangeValue(move) {
	var attackerValue = getPieceValue(move.piece.pieceType);
	var targetPiece = getPieceAt(move.toRow, move.toCol);
	if (!targetPiece) return 0;
	var defenderValue = getPieceValue(targetPiece.pieceType);
	// Simulate the capture and see if opponent can recapture
	return simulateMove(move, function () {
		var opponentMoves = getAllValidMoves('white');
		var canRecapture = false;
		var recaptureValue = 0;
		for (var i = 0; i < opponentMoves.length; i++) {
			var opMove = opponentMoves[i];
			if (opMove.toRow === move.toRow && opMove.toCol === move.toCol) {
				canRecapture = true;
				recaptureValue = Math.min(recaptureValue || attackerValue, getPieceValue(opMove.piece.pieceType));
			}
		}
		if (canRecapture) {
			return defenderValue - recaptureValue;
		} else {
			return defenderValue;
		}
	});
}
function evaluateTacticalPatterns(move) {
	var score = 0;
	// Check gives reduced bonus (more defensive approach)
	if (simulateMove(move, function () {
		return isInCheck('white');
	})) {
		score += 15; // Reduced from 30
	}
	// Fork pattern - attacking multiple pieces (less aggressive)
	var forkTargets = 0;
	simulateMove(move, function () {
		for (var i = 0; i < pieces.length; i++) {
			var piece = pieces[i];
			if (piece.pieceColor === 'white' && move.piece.canMoveTo(piece.row, piece.col)) {
				forkTargets++;
			}
		}
		return false;
	});
	if (forkTargets >= 2) {
		score += 20; // Reduced from 40
	} else if (forkTargets >= 1) {
		score += 5; // Reduced from 10
	}
	// Pin detection (reduced)
	if (createsPinPattern(move)) {
		score += 12; // Reduced from 25
	}
	// Discovered attack (reduced)
	if (createsDiscoveredAttack(move)) {
		score += 17; // Reduced from 35
	}
	return score;
}
function evaluatePieceSpecificMove(move) {
	var score = 0;
	var piece = move.piece;
	switch (piece.pieceType) {
		case 'snake':
			// Snake special abilities
			score += evaluateSnakeMove(move);
			break;
		case 'princess':
			// Princess elimination potential
			score += evaluatePrincessMove(move);
			break;
		case 'summoner':
			// Summoner positioning and summoning potential
			score += evaluateSummonerMove(move);
			break;
		case 'queen':
			// Queen positioning and power
			score += evaluateQueenMove(move);
			break;
		case 'knight':
			// Knight outpost evaluation
			score += evaluateKnightMove(move);
			break;
		case 'rook':
			// Rook file and rank control
			score += evaluateRookMove(move);
			break;
		case 'bishop':
			// Bishop diagonal control
			score += evaluateBishopMove(move);
			break;
		case 'pawn':
			// Pawn advancement and promotion
			score += evaluatePawnMove(move);
			break;
	}
	return score;
}
function evaluateSnakeMove(move) {
	var score = 0;
	// Reduced poison aggression - only target when safe
	var poisonTargets = 0;
	simulateMove(move, function () {
		var poisonPositions = [{
			row: move.toRow - 1,
			col: move.toCol - 1
		}, {
			row: move.toRow - 1,
			col: move.toCol
		}, {
			row: move.toRow - 1,
			col: move.toCol + 1
		}, {
			row: move.toRow,
			col: move.toCol - 1
		}, {
			row: move.toRow,
			col: move.toCol + 1
		}, {
			row: move.toRow + 1,
			col: move.toCol - 1
		}, {
			row: move.toRow + 1,
			col: move.toCol
		}, {
			row: move.toRow + 1,
			col: move.toCol + 1
		}];
		for (var i = 0; i < poisonPositions.length; i++) {
			var pos = poisonPositions[i];
			if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
				var targetPiece = getPieceAt(pos.row, pos.col);
				if (targetPiece && targetPiece.pieceColor === 'white' && targetPiece.pieceType !== 'king' && targetPiece.pieceType !== 'queen') {
					poisonTargets++;
					score += getPieceValue(targetPiece.pieceType) * 2; // Reduced from 5
				}
			}
		}
		return false;
	});
	// Reduced multi-move tactical advantage
	if (move.piece.snakeMovesThisTurn === 0) {
		score += 8; // Reduced from 15
	}
	// Favor defensive positioning
	var distanceFromOwnKing = Math.abs(move.toRow - findKing('black').row) + Math.abs(move.toCol - findKing('black').col);
	if (distanceFromOwnKing <= 4) {
		score += 10; // Bonus for staying near own king
	}
	return score;
}
function evaluateSummonerMove(move) {
	var score = 0;
	// Bonus for positioning summoner to summon in useful positions
	if (move.piece.summonerMoveCount >= 2) {
		// About to summon, evaluate summoning positions
		var summonPositions = [{
			row: move.toRow - 1,
			col: move.toCol
		},
		// up
		{
			row: move.toRow,
			col: move.toCol + 1
		},
		// right  
		{
			row: move.toRow + 1,
			col: move.toCol
		},
		// down
		{
			row: move.toRow,
			col: move.toCol - 1
		},
		// left
		{
			row: move.toRow - 1,
			col: move.toCol + 1
		},
		// up-right
		{
			row: move.toRow + 1,
			col: move.toCol + 1
		},
		// down-right
		{
			row: move.toRow + 1,
			col: move.toCol - 1
		},
		// down-left
		{
			row: move.toRow - 1,
			col: move.toCol - 1
		} // up-left
		];
		var goodSummonSpots = 0;
		for (var i = 0; i < summonPositions.length && goodSummonSpots < 2; i++) {
			var pos = summonPositions[i];
			if (pos.row >= 0 && pos.row < 8 && pos.col >= 0 && pos.col < 16) {
				if (!getPieceAt(pos.row, pos.col)) {
					goodSummonSpots++;
					// Bonus for summoning in aggressive positions
					if (move.piece.pieceColor === 'black' && pos.row >= 4 || move.piece.pieceColor === 'white' && pos.row <= 3) {
						score += 15;
					} else {
						score += 8;
					}
				}
			}
		}
		if (goodSummonSpots >= 2) {
			score += 25; // Bonus for full summoning potential
		}
	}
	// Strategic positioning like princess
	var centralControl = 0;
	var centerSquares = [{
		row: 3,
		col: 7
	}, {
		row: 3,
		col: 8
	}, {
		row: 4,
		col: 7
	}, {
		row: 4,
		col: 8
	}];
	for (var i = 0; i < centerSquares.length; i++) {
		var square = centerSquares[i];
		if (Math.abs(move.toRow - square.row) <= 2 && Math.abs(move.toCol - square.col) <= 2) {
			centralControl++;
		}
	}
	score += centralControl * 3;
	return score;
}
;
function evaluatePrincessMove(move) {
	var score = 0;
	// Evaluate elimination potential within 2 squares
	var enemiesInRange = [];
	for (var dr = -2; dr <= 2; dr++) {
		for (var dc = -2; dc <= 2; dc++) {
			if (dr === 0 && dc === 0) continue;
			var checkRow = move.toRow + dr;
			var checkCol = move.toCol + dc;
			if (checkRow >= 0 && checkRow < 8 && checkCol >= 0 && checkCol < 16) {
				var piece = getPieceAt(checkRow, checkCol);
				if (piece && piece.pieceColor === 'white') {
					enemiesInRange.push(piece);
					score += getPieceValue(piece.pieceType) * 2;
				}
			}
		}
	}
	// Bonus for positioning where elimination can capture 2+ high-value pieces
	if (enemiesInRange.length >= 2) {
		// Sort enemies by value and consider best 2
		enemiesInRange.sort(function (a, b) {
			return getPieceValue(b.pieceType) - getPieceValue(a.pieceType);
		});
		var topTwoValue = getPieceValue(enemiesInRange[0].pieceType) + getPieceValue(enemiesInRange[1].pieceType);
		score += topTwoValue * 5; // High bonus for double elimination potential
	}
	return score;
}
function evaluateQueenMove(move) {
	var score = 0;
	// Queens should control center and support attacks
	var centralControl = 0;
	var centerSquares = [{
		row: 3,
		col: 7
	}, {
		row: 3,
		col: 8
	}, {
		row: 4,
		col: 7
	}, {
		row: 4,
		col: 8
	}];
	simulateMove(move, function () {
		for (var i = 0; i < centerSquares.length; i++) {
			var square = centerSquares[i];
			if (move.piece.canMoveTo(square.row, square.col)) {
				centralControl++;
			}
		}
		return false;
	});
	score += centralControl * 5;
	// Bonus for long-range queen moves
	var rowDiff = Math.abs(move.toRow - move.piece.row);
	var colDiff = Math.abs(move.toCol - move.piece.col);
	var moveDistance = Math.max(rowDiff, colDiff);
	if (moveDistance > 2) {
		score += 5; // Bonus for using queen's long-range capability
	}
	// Support other pieces
	var supportedAllies = countSupportedAllies(move);
	score += supportedAllies * 8;
	return score;
}
function evaluatePositionalFactors(move) {
	var score = 0;
	// Center control
	var centerDistance = Math.abs(move.toRow - 3.5) + Math.abs(move.toCol - 7.5);
	score += (16 - centerDistance) * 2;
	// Piece mobility after move
	var mobilityAfter = simulateMove(move, function () {
		var validMovesAfter = 0;
		for (var row = 0; row < 8; row++) {
			for (var col = 0; col < 16; col++) {
				if (move.piece.canMoveTo(row, col)) {
					validMovesAfter++;
				}
			}
		}
		return validMovesAfter;
	});
	score += mobilityAfter * 1;
	// Safety evaluation
	if (isPieceUnderThreatAt(move.piece, move.toRow, move.toCol)) {
		score -= getPieceValue(move.piece.pieceType) * 3;
	}
	return score;
}
function evaluateKingAttack(move) {
	var score = 0;
	var whiteKing = findKing('white');
	if (!whiteKing) return 0;
	// Reduced emphasis on approaching enemy king
	var distanceToKing = Math.abs(move.toRow - whiteKing.row) + Math.abs(move.toCol - whiteKing.col);
	var currentDistance = Math.abs(move.piece.row - whiteKing.row) + Math.abs(move.piece.col - whiteKing.col);
	if (distanceToKing < currentDistance) {
		score += (currentDistance - distanceToKing) * 1; // Reduced from 3
	}
	// Reduced control emphasis around enemy king
	var controlledKingSquares = 0;
	simulateMove(move, function () {
		for (var dr = -1; dr <= 1; dr++) {
			for (var dc = -1; dc <= 1; dc++) {
				var kingAdjacentRow = whiteKing.row + dr;
				var kingAdjacentCol = whiteKing.col + dc;
				if (kingAdjacentRow >= 0 && kingAdjacentRow < 8 && kingAdjacentCol >= 0 && kingAdjacentCol < 16) {
					if (move.piece.canMoveTo(kingAdjacentRow, kingAdjacentCol)) {
						controlledKingSquares++;
					}
				}
			}
		}
		return false;
	});
	score += controlledKingSquares * 3; // Reduced from 8
	return score;
}
function evaluatePieceCoordination(move) {
	var score = 0;
	// Count how many allied pieces this move supports
	var supportedAllies = countSupportedAllies(move);
	score += supportedAllies * 5;
	// Count how many allied pieces support this piece at new position
	var supportingAllies = countSupportingAllies(move);
	score += supportingAllies * 3;
	return score;
}
function countSupportedAllies(move) {
	var supported = 0;
	return simulateMove(move, function () {
		for (var i = 0; i < pieces.length; i++) {
			var ally = pieces[i];
			if (ally.pieceColor === 'black' && ally !== move.piece) {
				if (move.piece.canMoveTo(ally.row, ally.col)) {
					supported++;
				}
			}
		}
		return supported;
	});
}
function countSupportingAllies(move) {
	var supporting = 0;
	return simulateMove(move, function () {
		for (var i = 0; i < pieces.length; i++) {
			var ally = pieces[i];
			if (ally.pieceColor === 'black' && ally !== move.piece) {
				if (ally.canMoveTo(move.toRow, move.toCol)) {
					supporting++;
				}
			}
		}
		return supporting;
	});
}
function createsPinPattern(move) {
	var whiteKing = findKing('white');
	if (!whiteKing) return false;
	return simulateMove(move, function () {
		// Check if this move creates a pin on enemy pieces
		for (var i = 0; i < pieces.length; i++) {
			var enemyPiece = pieces[i];
			if (enemyPiece.pieceColor === 'white' && enemyPiece !== whiteKing) {
				// Temporarily remove the piece and see if king becomes attackable
				var originalRow = enemyPiece.row;
				var originalCol = enemyPiece.col;
				gameBoard[originalRow][originalCol] = null;
				var pinExists = move.piece.canMoveTo(whiteKing.row, whiteKing.col);
				gameBoard[originalRow][originalCol] = enemyPiece;
				if (pinExists) {
					return true;
				}
			}
		}
		return false;
	});
}
function createsDiscoveredAttack(move) {
	// Check if moving this piece uncovers an attack from another piece
	var originalRow = move.piece.row;
	var originalCol = move.piece.col;
	// Temporarily move piece and check if any ally can now attack
	return simulateMove(move, function () {
		for (var i = 0; i < pieces.length; i++) {
			var ally = pieces[i];
			if (ally.pieceColor === 'black' && ally !== move.piece) {
				for (var j = 0; j < pieces.length; j++) {
					var enemy = pieces[j];
					if (enemy.pieceColor === 'white') {
						// Check if ally can now attack enemy after piece moved
						var couldAttackBefore = false;
						// Temporarily put piece back at original position
						gameBoard[move.toRow][move.toCol] = null;
						gameBoard[originalRow][originalCol] = move.piece;
						move.piece.row = originalRow;
						move.piece.col = originalCol;
						couldAttackBefore = ally.canMoveTo(enemy.row, enemy.col);
						// Put piece back at new position
						gameBoard[originalRow][originalCol] = null;
						gameBoard[move.toRow][move.toCol] = move.piece;
						move.piece.row = move.toRow;
						move.piece.col = move.toCol;
						var canAttackAfter = ally.canMoveTo(enemy.row, enemy.col);
						if (!couldAttackBefore && canAttackAfter) {
							return true;
						}
					}
				}
			}
		}
		return false;
	});
}
function findBestPrincessElimination() {
	// Find AI princess pieces that can use elimination ability
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		if (piece.pieceType === 'princess' && piece.pieceColor === 'black') {
			// Find enemies within 2 squares of princess
			var targetsInRange = [];
			for (var dr = -2; dr <= 2; dr++) {
				for (var dc = -2; dc <= 2; dc++) {
					if (dr === 0 && dc === 0) continue;
					var checkRow = piece.row + dr;
					var checkCol = piece.col + dc;
					if (checkRow >= 0 && checkRow < 8 && checkCol >= 0 && checkCol < 16) {
						var targetPiece = getPieceAt(checkRow, checkCol);
						if (targetPiece && targetPiece.pieceColor === 'white') {
							targetsInRange.push(targetPiece);
						}
					}
				}
			}
			// If we can eliminate 2+ pieces, prioritize highest value targets
			if (targetsInRange.length >= 2) {
				// Sort by piece value, highest first
				targetsInRange.sort(function (a, b) {
					return getPieceValue(b.pieceType) - getPieceValue(a.pieceType);
				});
				// Check if the top 2 targets are worth eliminating
				var topTwoValue = getPieceValue(targetsInRange[0].pieceType) + getPieceValue(targetsInRange[1].pieceType);
				if (topTwoValue >= 6) {
					// Worth at least 6 points total
					// Execute princess elimination
					LK.setTimeout(function () {
						// Remove the two highest value targets
						for (var j = 0; j < 2; j++) {
							var target = targetsInRange[j];
							for (var k = 0; k < pieces.length; k++) {
								if (pieces[k] === target) {
									gameBoard[target.row][target.col] = null;
									target.destroy();
									pieces.splice(k, 1);
									break;
								}
							}
						}
						LK.getSound('capture').play();
						turnText.setText('Black Princess eliminates 2 pieces!');
						// Switch turns
						currentPlayer = 'white';
						LK.setTimeout(function () {
							turnText.setText('Your Turn');
						}, 1000);
					}, 800);
					return {
						piece: piece,
						isElimination: true
					}; // Special marker for elimination
				}
			}
		}
	}
	return null;
}
function findBestDefensiveMove(validMoves) {
	var bestDefense = null;
	var bestScore = -1000;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		var score = 0;
		// Check if this move gets us out of check
		if (simulateMove(move, function () {
			return !isInCheck('black');
		})) {
			score += 100;
			// Prefer counter-attacks when escaping check
			var targetPiece = getPieceAt(move.toRow, move.toCol);
			if (targetPiece && targetPiece.pieceColor === 'white') {
				score += getPieceValue(targetPiece.pieceType) * 10;
			}
			if (score > bestScore) {
				bestScore = score;
				bestDefense = move;
			}
		}
	}
	return bestDefense;
}
// Enhanced piece-specific evaluation functions
function evaluateKnightMove(move) {
	var score = 0;
	// Knights are effective in closed positions and as outposts
	var distanceFromCenter = Math.abs(move.toRow - 3.5) + Math.abs(move.toCol - 7.5);
	if (distanceFromCenter < 4) {
		score += 10; // Favor central knight positions
	}
	return score;
}
function evaluateRookMove(move) {
	var score = 0;
	// Rooks benefit from open files and ranks
	var openFile = true;
	var openRank = true;
	// Check if file is open
	for (var row = 0; row < 8; row++) {
		if (row !== move.toRow) {
			var piece = getPieceAt(row, move.toCol);
			if (piece && piece.pieceColor === move.piece.pieceColor) {
				openFile = false;
				break;
			}
		}
	}
	// Check if rank is open  
	for (var col = 0; col < 16; col++) {
		if (col !== move.toCol) {
			var piece = getPieceAt(move.toRow, col);
			if (piece && piece.pieceColor === move.piece.pieceColor) {
				openRank = false;
				break;
			}
		}
	}
	if (openFile) score += 15;
	if (openRank) score += 10;
	return score;
}
function evaluateBishopMove(move) {
	var score = 0;
	// Bishops benefit from long diagonals
	var diagonalLength = Math.min(Math.min(move.toRow, 7 - move.toRow) + Math.min(move.toCol, 15 - move.toCol), Math.min(move.toRow, 7 - move.toRow) + Math.min(15 - move.toCol, move.toCol));
	score += diagonalLength * 2;
	return score;
}
function evaluatePawnMove(move) {
	var score = 0;
	// Pawns should advance toward promotion
	var advancement = move.piece.pieceColor === 'black' ? move.toRow - move.piece.row : move.piece.row - move.toRow;
	if (advancement > 0) {
		score += advancement * 5;
	}
	// Near promotion gets huge bonus
	if (move.piece.pieceColor === 'black' && move.toRow >= 6 || move.piece.pieceColor === 'white' && move.toRow <= 1) {
		score += 50;
	}
	return score;
}
function findCheckmateInOne(validMoves) {
	// Find immediate checkmate moves - highest priority
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		if (simulateMove(move, function () {
			if (isInCheck('white')) {
				// Check if white has any escape moves
				var whiteMoves = getAllValidMoves('white');
				for (var j = 0; j < whiteMoves.length; j++) {
					if (canEscapeCheck(whiteMoves[j].piece, whiteMoves[j].toRow, whiteMoves[j].toCol)) {
						return false; // Not checkmate - escape exists
					}
				}
				return true; // Checkmate confirmed
			}
			return false;
		})) {
			return move; // Found checkmate in one
		}
	}
	return null;
}
function preventOpponentCheckmate(validMoves) {
	// Prevent opponent from achieving checkmate next move
	var opponentThreats = getAllValidMoves('white');
	for (var i = 0; i < opponentThreats.length; i++) {
		var threatMove = opponentThreats[i];
		// Check if opponent threat leads to our checkmate
		var wouldBeCheckmate = simulateOpponentMove(threatMove, function () {
			if (isInCheck('black')) {
				var blackMoves = getAllValidMoves('black');
				for (var j = 0; j < blackMoves.length; j++) {
					if (canEscapeCheck(blackMoves[j].piece, blackMoves[j].toRow, blackMoves[j].toCol)) {
						return false; // We can escape
					}
				}
				return true; // We would be checkmated
			}
			return false;
		});
		if (wouldBeCheckmate) {
			// Find move that prevents this checkmate
			for (var k = 0; k < validMoves.length; k++) {
				var preventMove = validMoves[k];
				if (simulateMove(preventMove, function () {
					return !simulateOpponentMove(threatMove, function () {
						return isInCheck('black');
					});
				})) {
					return preventMove; // This move prevents checkmate
				}
			}
		}
	}
	return null;
}
function simulateOpponentMove(opponentMove, testFunction) {
	// Temporarily simulate opponent's move
	var originalRow = opponentMove.piece.row;
	var originalCol = opponentMove.piece.col;
	var capturedPiece = getPieceAt(opponentMove.toRow, opponentMove.toCol);
	gameBoard[originalRow][originalCol] = null;
	gameBoard[opponentMove.toRow][opponentMove.toCol] = opponentMove.piece;
	opponentMove.piece.row = opponentMove.toRow;
	opponentMove.piece.col = opponentMove.toCol;
	var result = testFunction();
	// Restore position
	opponentMove.piece.row = originalRow;
	opponentMove.piece.col = originalCol;
	gameBoard[originalRow][originalCol] = opponentMove.piece;
	gameBoard[opponentMove.toRow][opponentMove.toCol] = capturedPiece;
	return result;
}
function findBestTacticalCombination(validMoves) {
	// Find complex tactical sequences - pins, forks, discoveries, sacrifices
	var bestTactical = null;
	var bestTacticalValue = 0;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		var tacticalValue = 0;
		// Check for forcing sequences
		if (isMoveForcingSequence(move)) {
			tacticalValue += 50;
		}
		// Check for piece sacrifice that leads to mate
		if (isBrilliantSacrifice(move)) {
			tacticalValue += 100;
		}
		// Check for advanced pin patterns
		if (createsAdvancedPin(move)) {
			tacticalValue += 40;
		}
		// Check for discovered attack combinations
		if (createsDiscoveredCombination(move)) {
			tacticalValue += 60;
		}
		// Check for deflection tactics
		if (createsDeflection(move)) {
			tacticalValue += 35;
		}
		if (tacticalValue > bestTacticalValue) {
			bestTacticalValue = tacticalValue;
			bestTactical = move;
		}
	}
	return bestTacticalValue >= 30 ? bestTactical : null;
}
function isMoveForcingSequence(move) {
	// Check if move forces opponent into bad position
	return simulateMove(move, function () {
		var opponentMoves = getAllValidMoves('white');
		var forcedBadMoves = 0;
		for (var i = 0; i < opponentMoves.length; i++) {
			var opMove = opponentMoves[i];
			if (simulateOpponentMove(opMove, function () {
				return isInCheck('white') || isPieceUnderThreat(opMove.piece);
			})) {
				forcedBadMoves++;
			}
		}
		return forcedBadMoves >= opponentMoves.length * 0.7; // 70% of moves are bad
	});
}
function isBrilliantSacrifice(move) {
	// Check for brilliant sacrifices that lead to winning positions
	var targetPiece = getPieceAt(move.toRow, move.toCol);
	if (!targetPiece) return false;
	var sacrificeValue = getPieceValue(move.piece.pieceType);
	var gainValue = getPieceValue(targetPiece.pieceType);
	// Only consider if we're sacrificing material
	if (sacrificeValue <= gainValue) return false;
	return simulateMove(move, function () {
		// Check if sacrifice leads to overwhelming position or mate threat
		var ourAdvantageAfter = calculatePositionalAdvantage('black');
		var opponentMoves = getAllValidMoves('white');
		// If opponent has very limited good responses, sacrifice is brilliant
		var goodOpponentMoves = 0;
		for (var i = 0; i < opponentMoves.length; i++) {
			if (!isPieceUnderThreatAt(opponentMoves[i].piece, opponentMoves[i].toRow, opponentMoves[i].toCol)) {
				goodOpponentMoves++;
			}
		}
		return ourAdvantageAfter > 30 || goodOpponentMoves <= 2;
	});
}
function calculatePositionalAdvantage(color) {
	var advantage = 0;
	var ourColor = color;
	var enemyColor = color === 'white' ? 'black' : 'white';
	// Material count
	for (var i = 0; i < pieces.length; i++) {
		var piece = pieces[i];
		var value = getPieceValue(piece.pieceType);
		if (piece.pieceColor === ourColor) {
			advantage += value;
		} else {
			advantage -= value;
		}
	}
	// Positional factors
	var ourKing = findKing(ourColor);
	var enemyKing = findKing(enemyColor);
	if (ourKing && enemyKing) {
		// King safety difference
		advantage += (countThreatsToKing(enemyColor) - countThreatsToKing(ourColor)) * 5;
		// Center control
		var ourCenterControl = 0;
		var enemyCenterControl = 0;
		var centerSquares = [{
			row: 3,
			col: 7
		}, {
			row: 3,
			col: 8
		}, {
			row: 4,
			col: 7
		}, {
			row: 4,
			col: 8
		}];
		for (var i = 0; i < pieces.length; i++) {
			var piece = pieces[i];
			for (var j = 0; j < centerSquares.length; j++) {
				if (piece.canMoveTo(centerSquares[j].row, centerSquares[j].col)) {
					if (piece.pieceColor === ourColor) {
						ourCenterControl++;
					} else {
						enemyCenterControl++;
					}
				}
			}
		}
		advantage += (ourCenterControl - enemyCenterControl) * 2;
	}
	return advantage;
}
function calculatePerfectFork(move) {
	// Calculate exact value of fork attacks
	var forkTargets = [];
	return simulateMove(move, function () {
		for (var i = 0; i < pieces.length; i++) {
			var piece = pieces[i];
			if (piece.pieceColor === 'white' && move.piece.canMoveTo(piece.row, piece.col)) {
				forkTargets.push(getPieceValue(piece.pieceType));
			}
		}
		// Return value of second-best target (since we can only capture one)
		if (forkTargets.length >= 2) {
			forkTargets.sort(function (a, b) {
				return b - a;
			});
			return forkTargets[1]; // Second highest value
		}
		return 0;
	});
}
function createsPerfectPin(move) {
	var enemyKing = findKing('white');
	if (!enemyKing) return false;
	return simulateMove(move, function () {
		// Check if move creates pin against enemy king
		var direction = {
			row: enemyKing.row - move.toRow,
			col: enemyKing.col - move.toCol
		};
		// Normalize direction
		var gcd = Math.abs(direction.row) || Math.abs(direction.col);
		if (gcd > 0) {
			direction.row = direction.row / gcd;
			direction.col = direction.col / gcd;
		}
		// Check if there's exactly one enemy piece between attacker and king
		var currentRow = move.toRow + direction.row;
		var currentCol = move.toCol + direction.col;
		var blockerFound = false;
		while (currentRow !== enemyKing.row || currentCol !== enemyKing.col) {
			var piece = getPieceAt(currentRow, currentCol);
			if (piece) {
				if (piece.pieceColor === 'white' && !blockerFound) {
					blockerFound = true; // First blocker found
				} else {
					return false; // Multiple pieces or our piece blocking
				}
			}
			currentRow += direction.row;
			currentCol += direction.col;
			if (currentRow < 0 || currentRow >= 8 || currentCol < 0 || currentCol >= 16) break;
		}
		return blockerFound;
	});
}
function createsPerfectDiscovery(move) {
	// Check for discovered attacks with perfect accuracy
	var originalRow = move.piece.row;
	var originalCol = move.piece.col;
	return simulateMove(move, function () {
		// Check if moving this piece discovers an attack from another piece
		for (var i = 0; i < pieces.length; i++) {
			var ally = pieces[i];
			if (ally.pieceColor === 'black' && ally !== move.piece) {
				// Temporarily put moving piece back
				gameBoard[move.toRow][move.toCol] = null;
				gameBoard[originalRow][originalCol] = move.piece;
				move.piece.row = originalRow;
				move.piece.col = originalCol;
				var couldAttackBefore = false;
				for (var j = 0; j < pieces.length; j++) {
					var enemy = pieces[j];
					if (enemy.pieceColor === 'white' && ally.canMoveTo(enemy.row, enemy.col)) {
						couldAttackBefore = true;
						break;
					}
				}
				// Restore position
				gameBoard[originalRow][originalCol] = null;
				gameBoard[move.toRow][move.toCol] = move.piece;
				move.piece.row = move.toRow;
				move.piece.col = move.toCol;
				if (!couldAttackBefore) {
					// Check if ally can attack enemy pieces now
					for (var j = 0; j < pieces.length; j++) {
						var enemy = pieces[j];
						if (enemy.pieceColor === 'white' && ally.canMoveTo(enemy.row, enemy.col)) {
							return true; // Discovered attack found
						}
					}
				}
			}
		}
		return false;
	});
}
function createsPerfectDeflection(move) {
	// Check if move deflects a key defender
	var targetPiece = getPieceAt(move.toRow, move.toCol);
	if (!targetPiece || targetPiece.pieceColor !== 'white') return false;
	return simulateMove(move, function () {
		// Check if capturing this piece leaves important pieces undefended
		for (var i = 0; i < pieces.length; i++) {
			var piece = pieces[i];
			if (piece.pieceColor === 'white' && piece !== targetPiece) {
				var wasDefended = targetPiece.canMoveTo(piece.row, piece.col);
				if (wasDefended) {
					// Check if piece is now undefended and can be captured
					var isNowUndefended = true;
					for (var j = 0; j < pieces.length; j++) {
						var defender = pieces[j];
						if (defender.pieceColor === 'white' && defender !== targetPiece && defender.canMoveTo(piece.row, piece.col)) {
							isNowUndefended = false;
							break;
						}
					}
					if (isNowUndefended) {
						return true; // Successful deflection
					}
				}
			}
		}
		return false;
	});
}
function createsDeflection(move) {
	// Check if move deflects a key defender piece
	var targetPiece = getPieceAt(move.toRow, move.toCol);
	if (!targetPiece || targetPiece.pieceColor !== 'black') return false;
	return simulateMove(move, function () {
		// Check if capturing this piece leaves important pieces undefended
		for (var i = 0; i < pieces.length; i++) {
			var piece = pieces[i];
			if (piece.pieceColor === 'black' && piece !== targetPiece) {
				var wasDefended = targetPiece.canMoveTo(piece.row, piece.col);
				if (wasDefended) {
					// Check if piece is now undefended and can be captured
					var isNowUndefended = true;
					for (var j = 0; j < pieces.length; j++) {
						var defender = pieces[j];
						if (defender.pieceColor === 'black' && defender !== targetPiece && defender.canMoveTo(piece.row, piece.col)) {
							isNowUndefended = false;
							break;
						}
					}
					if (isNowUndefended) {
						return true; // Successful deflection
					}
				}
			}
		}
		return false;
	});
}
function createsDiscoveredCombination(move) {
	// Check for discovered attack combinations - complex tactical patterns
	var originalRow = move.piece.row;
	var originalCol = move.piece.col;
	return simulateMove(move, function () {
		// Check if moving this piece creates multiple discovered attacks
		var discoveredAttacks = 0;
		var highValueTargets = 0;
		// Check each ally piece to see if it gains new attacking opportunities
		for (var i = 0; i < pieces.length; i++) {
			var ally = pieces[i];
			if (ally.pieceColor === 'black' && ally !== move.piece) {
				// Temporarily put moving piece back to check what was blocked before
				gameBoard[move.toRow][move.toCol] = null;
				gameBoard[originalRow][originalCol] = move.piece;
				move.piece.row = originalRow;
				move.piece.col = originalCol;
				var enemyTargetsBefore = [];
				for (var j = 0; j < pieces.length; j++) {
					var enemy = pieces[j];
					if (enemy.pieceColor === 'white' && ally.canMoveTo(enemy.row, enemy.col)) {
						enemyTargetsBefore.push(enemy);
					}
				}
				// Restore position after move
				gameBoard[originalRow][originalCol] = null;
				gameBoard[move.toRow][move.toCol] = move.piece;
				move.piece.row = move.toRow;
				move.piece.col = move.toCol;
				var enemyTargetsAfter = [];
				for (var j = 0; j < pieces.length; j++) {
					var enemy = pieces[j];
					if (enemy.pieceColor === 'white' && ally.canMoveTo(enemy.row, enemy.col)) {
						enemyTargetsAfter.push(enemy);
					}
				}
				// Check for new attacks that weren't possible before
				for (var k = 0; k < enemyTargetsAfter.length; k++) {
					var newTarget = enemyTargetsAfter[k];
					var wasTargetedBefore = false;
					for (var l = 0; l < enemyTargetsBefore.length; l++) {
						if (enemyTargetsBefore[l] === newTarget) {
							wasTargetedBefore = true;
							break;
						}
					}
					if (!wasTargetedBefore) {
						discoveredAttacks++;
						var targetValue = getPieceValue(newTarget.pieceType);
						if (targetValue >= 5) {
							// Queen, rook, or higher value pieces
							highValueTargets++;
						}
					}
				}
			}
		}
		// Discovered combination is valuable if it creates multiple new attacks
		// or targets high-value pieces
		return discoveredAttacks >= 2 || highValueTargets >= 1;
	});
}
function createsAdvancedPin(move) {
	// Check for advanced pin patterns - more sophisticated than basic pins
	var enemyKing = findKing('white');
	if (!enemyKing) return false;
	return simulateMove(move, function () {
		// Check if move creates a pin that restricts enemy piece movement
		for (var i = 0; i < pieces.length; i++) {
			var enemyPiece = pieces[i];
			if (enemyPiece.pieceColor === 'white' && enemyPiece.pieceType !== 'king') {
				// Check if this enemy piece is now pinned to their king
				var direction = {
					row: enemyKing.row - enemyPiece.row,
					col: enemyKing.col - enemyPiece.col
				};
				// Normalize direction
				var maxDist = Math.max(Math.abs(direction.row), Math.abs(direction.col));
				if (maxDist > 0) {
					direction.row = Math.round(direction.row / maxDist);
					direction.col = Math.round(direction.col / maxDist);
					// Check if our piece can attack along this line through the pinned piece to the king
					var canPinThroughPiece = false;
					if (move.piece.canMoveTo(enemyKing.row, enemyKing.col)) {
						// Temporarily remove the potentially pinned piece
						var originalRow = enemyPiece.row;
						var originalCol = enemyPiece.col;
						gameBoard[originalRow][originalCol] = null;
						// Check if our piece can still attack the king
						if (move.piece.canMoveTo(enemyKing.row, enemyKing.col)) {
							canPinThroughPiece = true;
						}
						// Restore the piece
						gameBoard[originalRow][originalCol] = enemyPiece;
					}
					if (canPinThroughPiece) {
						// Verify the pin is along a straight line (rook/queen) or diagonal (bishop/queen)
						var rowDiff = Math.abs(move.toRow - enemyKing.row);
						var colDiff = Math.abs(move.toCol - enemyKing.col);
						var isStraightLine = rowDiff === 0 || colDiff === 0;
						var isDiagonal = rowDiff === colDiff;
						if (move.piece.pieceType === 'rook' && isStraightLine || move.piece.pieceType === 'bishop' && isDiagonal || move.piece.pieceType === 'quenn' && (isStraightLine || isDiagonal)) {
							return true; // Advanced pin created
						}
					}
				}
			}
		}
		return false;
	});
}
function createsPerfectSkewer(move) {
	// Check for skewer patterns (attacking valuable piece in front of less valuable)
	return simulateMove(move, function () {
		for (var i = 0; i < pieces.length; i++) {
			var frontPiece = pieces[i];
			if (frontPiece.pieceColor === 'white' && move.piece.canMoveTo(frontPiece.row, frontPiece.col)) {
				// Check if there's a less valuable piece behind this one
				var direction = {
					row: frontPiece.row - move.toRow,
					col: frontPiece.col - move.toCol
				};
				var gcd = Math.max(Math.abs(direction.row), Math.abs(direction.col));
				if (gcd > 0) {
					direction.row = Math.round(direction.row / gcd);
					direction.col = Math.round(direction.col / gcd);
					var checkRow = frontPiece.row + direction.row;
					var checkCol = frontPiece.col + direction.col;
					while (checkRow >= 0 && checkRow < 8 && checkCol >= 0 && checkCol < 16) {
						var behindPiece = getPieceAt(checkRow, checkCol);
						if (behindPiece && behindPiece.pieceColor === 'white') {
							var frontValue = getPieceValue(frontPiece.pieceType);
							var behindValue = getPieceValue(behindPiece.pieceType);
							if (frontValue > behindValue || frontPiece.pieceType === 'king') {
								return true; // Successful skewer
							}
							break;
						} else if (behindPiece) {
							break; // Our piece blocking
						}
						checkRow += direction.row;
						checkCol += direction.col;
					}
				}
			}
		}
		return false;
	});
}
function findOptimalDefensiveMove(validMoves) {
	// Find the best defensive move with perfect calculation
	var bestDefense = null;
	var bestDefenseScore = -10000;
	for (var i = 0; i < validMoves.length; i++) {
		var move = validMoves[i];
		var defenseScore = 0;
		// Check if move gets us out of check
		if (simulateMove(move, function () {
			return !isInCheck('black');
		})) {
			defenseScore += 1000;
			// Bonus for counter-attacking while defending
			var targetPiece = getPieceAt(move.toRow, move.toCol);
			if (targetPiece && targetPiece.pieceColor === 'white') {
				defenseScore += getPieceValue(targetPiece.pieceType) * 50;
				// Extra bonus for capturing the threatening piece
				var blackKing = findKing('black');
				var threateningPiece = findThreateningPiece(blackKing);
				if (targetPiece === threateningPiece) {
					defenseScore += 500; // Eliminate the threat directly
				}
			}
			// Bonus for creating counter-threats
			if (simulateMove(move, function () {
				return isInCheck('white');
			})) {
				defenseScore += 200;
			}
		}
		if (defenseScore > bestDefenseScore) {
			bestDefenseScore = defenseScore;
			bestDefense = move;
		}
	}
	return bestDefense;
}
function updateQueenSnakePinkSquares() {
	// Clear existing pink squares
	for (var i = 0; i < queenSnakePinkSquares.length; i++) {
		if (!queenSnakePinkSquares[i].destroyed) {
			queenSnakePinkSquares[i].destroy();
		}
	}
	queenSnakePinkSquares = [];
	// Add pink squares for white stamina consumers when stamina is 0
	if (staminaPoints === 0 && window.whiteStaminaConsumers) {
		for (var i = 0; i < window.whiteStaminaConsumers.length; i++) {
			var consumer = window.whiteStaminaConsumers[i];
			// Check if piece still exists, if so use current position, otherwise use stored position
			var pieceExists = false;
			var currentRow = consumer.row;
			var currentCol = consumer.col;
			for (var j = 0; j < pieces.length; j++) {
				if (pieces[j] === consumer.id) {
					pieceExists = true;
					currentRow = pieces[j].row;
					currentCol = pieces[j].col;
					break;
				}
			}
			var pinkSquare = LK.getAsset('staminaBar', {
				anchorX: 0,
				anchorY: 0,
				alpha: 0.4,
				scaleX: 128 / 40,
				// Scale to fit square size
				scaleY: 128 / 40
			});
			pinkSquare.x = boardStartX + currentCol * squareSize;
			pinkSquare.y = boardStartY + currentRow * squareSize;
			game.addChild(pinkSquare);
			queenSnakePinkSquares.push(pinkSquare);
			// Animate pink square appearance
			tween(pinkSquare, {
				alpha: 0.6
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
	}
	// Add pink squares for AI stamina consumers when AI stamina is 0
	if (aiStaminaPoints === 0 && window.blackStaminaConsumers) {
		for (var i = 0; i < window.blackStaminaConsumers.length; i++) {
			var consumer = window.blackStaminaConsumers[i];
			// Check if piece still exists, if so use current position, otherwise use stored position
			var pieceExists = false;
			var currentRow = consumer.row;
			var currentCol = consumer.col;
			for (var j = 0; j < pieces.length; j++) {
				if (pieces[j] === consumer.id) {
					pieceExists = true;
					currentRow = pieces[j].row;
					currentCol = pieces[j].col;
					break;
				}
			}
			var pinkSquare = LK.getAsset('staminaBar', {
				anchorX: 0,
				anchorY: 0,
				alpha: 0.4,
				scaleX: 128 / 40,
				// Scale to fit square size
				scaleY: 128 / 40
			});
			pinkSquare.x = boardStartX + currentCol * squareSize;
			pinkSquare.y = boardStartY + currentRow * squareSize;
			game.addChild(pinkSquare);
			queenSnakePinkSquares.push(pinkSquare);
			// Animate pink square appearance
			tween(pinkSquare, {
				alpha: 0.6
			}, {
				duration: 300,
				easing: tween.easeOut
			});
		}
	}
}

===================================================================
--- original.js
+++ change.js
@@ -1367,11 +1367,10 @@
 	piece.col = newCol;
 	piece.hasMoved = true;
 	gameBoard[newRow][newCol] = piece;
 	piece.updatePosition(true);
-	// Handle stamina cost for Queen and Snake moves
-	// For snake, only deduct stamina on the first move of the sequence
-	if (piece.pieceType === 'queen' || piece.pieceType === 'snake' && piece.snakeMovesThisTurn === 0) {
+	// Handle stamina cost for Queen moves (immediate) and Snake moves (on third move)
+	if (piece.pieceType === 'queen') {
 		if (piece.pieceColor === 'white' && staminaPoints > 0) {
 			staminaPoints--;
 			// Store reference to piece that consumed stamina for pink square tracking
 			if (!window.whiteStaminaConsumers) window.whiteStaminaConsumers = [];
@@ -1508,9 +1507,31 @@
 				clearHighlights();
 				selectedPiece = null;
 				return; // Don't switch turns
 			}
-			// Snake completed all 3 moves - put on cooldown and reset
+			// Snake completed all 3 moves - deduct stamina now and put on cooldown
+			if (piece.pieceColor === 'white' && staminaPoints > 0) {
+				staminaPoints--;
+				// Store reference to piece that consumed stamina for pink square tracking
+				if (!window.whiteStaminaConsumers) window.whiteStaminaConsumers = [];
+				window.whiteStaminaConsumers.push({
+					type: piece.pieceType,
+					row: piece.row,
+					col: piece.col,
+					id: piece
+				});
+				updateStaminaDisplay();
+			} else if (piece.pieceColor === 'black' && aiStaminaPoints > 0) {
+				aiStaminaPoints--;
+				// Store reference to piece that consumed stamina for pink square tracking
+				if (!window.blackStaminaConsumers) window.blackStaminaConsumers = [];
+				window.blackStaminaConsumers.push({
+					type: piece.pieceType,
+					row: piece.row,
+					col: piece.col,
+					id: piece
+				});
+			}
 			piece.snakeMovesThisTurn = 0;
 			piece.snakeOnCooldown = true;
 			piece.snakeLastMoveDirection = null;
 			currentSnakePiece = null;