===================================================================
--- original.js
+++ change.js
@@ -36,21 +36,28 @@
 var Pole = Container.expand(function () {
 	var self = Container.call(this);
 	self.cubes = [];
 	self.addCube = function () {
-		var cube = (self.cubes.length + 1) % 10 === 0 && self.cubes.length % 2 === 0 ? new CollapsibleCube() : new Cube();
+		var cube = (self.cubes.length + 1) % 10 === 0 ? new CollapsibleCube() : new Cube();
 		cube.y = -(self.cubes.length * 100) - (self.cubes.length - 1) * 2;
 		self.addChild(cube);
 		self.cubes.push(cube);
 	};
-	self.makeCubesFall = function () {
-		for (var i = self.cubes.length - 1; i >= 0; i--) {
-			(function (index) {
-				LK.setTimeout(function () {
-					self.cubes[index].isFalling = true;
-				}, index * 250); // Delay between each cube falling
-			})(i);
-		}
+	self.collapsePoleAndAdjacent = function (polesArray) {
+		var currentIndex = polesArray.indexOf(self);
+		var indicesToCollapse = [currentIndex - 1, currentIndex, currentIndex + 1];
+		indicesToCollapse.forEach(function (index) {
+			if (index >= 0 && index < polesArray.length) {
+				var pole = polesArray[index];
+				for (var i = pole.cubes.length - 1; i >= 0; i--) {
+					(function (cubeIndex) {
+						LK.setTimeout(function () {
+							pole.cubes[cubeIndex].isFalling = true;
+						}, cubeIndex * 250);
+					})(i);
+				}
+			}
+		});
 	};
 	self.isSliding = false;
 	self.slideDownUp = function () {
 		if (!self.isSliding) {
@@ -144,12 +151,19 @@
 	// Collision detection with poles
 	for (var i = 0; i < poles.length; i++) {
 		var pole = poles[i];
 		if (hero.intersects(pole) && hero.velocityY > 0 && hero.y + hero.height / 2 < pole.y) {
-			hero.y = pole.y - pole.getHeight() - hero.height / 2;
-			hero.isOnGround = true;
-			hero.velocityY = 0;
-			pole.slideDownUp();
+			var hitCollapsibleCube = pole.cubes.some(function (cube) {
+				return cube instanceof CollapsibleCube;
+			});
+			if (hitCollapsibleCube) {
+				pole.collapsePoleAndAdjacent(poles);
+			} else {
+				hero.y = pole.y - pole.getHeight() - hero.height / 2;
+				hero.isOnGround = true;
+				hero.velocityY = 0;
+				pole.slideDownUp();
+			}
 		}
 	}
 	// Remove off-screen poles and create new ones
 	var poleSpacing = 2;