===================================================================
--- original.js
+++ change.js
@@ -46,27 +46,29 @@
 	});
 	self.letter = letter;
 	var text = new Text2(letter.toUpperCase(), {
 		size: 128,
-		fill: "#ffffff",
-		anchorX: 0.5,
-		anchorY: 0.5
+		fill: "#ffffff"
 	});
 	text.anchor.set(0.5, 0.5);
 	self.addChild(text);
+	self.column = 0;
+	self.line = 0;
 	self.setLetter = function (newLetter) {
 		self.letter = newLetter;
 		text.setText(newLetter.toUpperCase());
-		text.x = 0;
-		text.y = 0;
+		text.x = -10;
+		text.y = -10;
 	};
 	self.setColorToLetter = function (color) {
 		text.fill = color;
 	};
 	self.on('click', function () {
 		//Fonction appelée lors du click sur la cellule
 		self.setColorToLetter("#0000FF");
+		self.isClicked = true;
 	});
+	self.isClicked = false; //Indique si la cellule a été cliquée
 });
 // LettersGrid class for managing the grid of letters, same as WordGrid but with control of number of columns and lines
 var LettersGrid = Container.expand(function (columns, lines) {
 	var self = Container.call(this);
@@ -74,8 +76,9 @@
 	self.gridColumns = columns;
 	self.gridLines = lines;
 	self.cellSize = 1280 / self.gridColumns;
 	self.cells = [];
+	self.emptyCells = []; //Liste des cellules vides
 	self.initializeGrid = function () {
 		for (var i = 0; i < self.gridLines; i++) {
 			self.cells[i] = [];
 			for (var j = 0; j < self.gridColumns; j++) {
@@ -83,8 +86,11 @@
 				cell.x = j * self.cellSize + self.cellSize / 2;
 				cell.y = i * self.cellSize + self.cellSize / 2;
 				self.addChild(cell);
 				self.cells[i][j] = cell;
+				cell.column = j;
+				cell.line = i;
+				self.emptyCells.push(cell);
 			}
 		}
 	};
 	self.addLetter = function (letter) {
@@ -93,28 +99,57 @@
 			for (var j = 0; j < self.gridColumns && !added; j++) {
 				if (self.cells[i][j].letter === '') {
 					self.cells[i][j].setLetter(letter);
 					added = true;
-					//Gestion du click sur la cellule
-					self.cells[i][j].on('click', function () {
-						self.cells[i][j].setColorToLetter("#0000FF");
-					});
+					//Retrait de la cellule de la liste des cellules vides
+					if (self.emptyCells.includes(self.cells[i][j])) {
+						self.emptyCells.splice(self.emptyCells.indexOf(self.cells[i][j]), 1);
+					}
 				}
 			}
 		}
 		return added;
-	};
+	}; //Fin de la fonction addLetter
 	self.addRandomPlace = function (letter) {
 		// Add a letter in a random empty cell
 		var added = false;
 		var i = Math.floor(Math.random() * self.gridLines);
 		var j = Math.floor(Math.random() * self.gridColumns);
 		if (self.cells[i][j].letter === '') {
 			self.cells[i][j].setLetter(letter);
 			added = true;
+			//Retrait de la cellule de la liste des cellules vides
+			if (self.emptyCells.includes(self.cells[i][j])) {
+				self.emptyCells.splice(self.emptyCells.indexOf(self.cells[i][j]), 1);
+			}
 		}
 		return added;
-	};
+	}; //Fin de la fonction addRandomPlace
+	self.addRandomLetter = function (letter) {
+		// Add a letter in a random empty cell using emptyCells list
+		var added = false;
+		if (self.emptyCells.length > 0) {
+			var randomIndex = Math.floor(Math.random() * self.emptyCells.length);
+			var cell = self.emptyCells[randomIndex];
+			cell.setLetter(letter);
+			added = true;
+			//Retrait de la cellule de la liste des cellules vides
+			if (self.emptyCells.includes(cell)) {
+				self.emptyCells.splice(self.emptyCells.indexOf(cell), 1);
+			}
+		}
+		return added;
+	}; //Fin de la fonction addRandomLetter
+	self.removeLetter = function (column, line) {
+		// Remove a letter from the grid at (column, line)
+		if (column >= 0 && column < self.gridColumns && line >= 0 && line < self.gridLines) {
+			self.cells[line][column].setLetter('');
+			//Ajout de la cellule à la liste des cellules vides
+			if (!self.emptyCells.includes(self.cells[line][column])) {
+				self.emptyCells.push(self.cells[line][column]);
+			}
+		}
+	}; //Fin de la fonction removeLetter
 	self.isFull = function () {
 		for (var i = 0; i < self.gridLines; i++) {
 			for (var j = 0; j < self.gridColumns; j++) {
 				if (self.cells[i][j].letter === '') {
@@ -123,8 +158,15 @@
 			}
 		}
 		return true;
 	};
+	self.colorAllCells = function (color) {
+		for (var i = 0; i < self.gridLines; i++) {
+			for (var j = 0; j < self.gridColumns; j++) {
+				self.cells[i][j].setColorToLetter(color);
+			}
+		}
+	};
 });
 
 /**** 
 * Initialize Game
@@ -215,8 +257,9 @@
 			return;
 		}
 		currentLetterIndex = (currentLetterIndex + 1) % lettersToAdd.length;
 		if (wordGrid.isFull()) {
+			wordGrid.colorAllCells("#FF0000");
 			LK.showGameOver();
 		}
 	}
 };