On each move, one of the enemy pieces makes a move. If an enemy pawn gets to the bottom horizontal line, it gets promoted to a queen. Capturing an enemy pawn gives 1 point, capturing a knight or a bishop gives 3 points, capturing a rook gives 5 points, and capturing a queen or a king gives 10 points. If you place the rook on an attacked cell, it will be captured and the game will be over.