This is a simple strategy game that is similar to Nim. In this game there is a chocolate bar that is divided into rectangular pieces. The two players take turns to choose a piece to eat, and eat all the pieces that are below and to its right. The piece on the top left is poisoned and the player who eats it loses the game. If you can recognize some winning patterns and make your moves wisely, you can force your opponent to eat the poisoned piece.