The game is played on a 13x13 board, with black and white stones. On each turn, each player dispatches a stone in an orthogonal direction starting from a friendly stone already on the board, as far as he likes provided it never encounters and non empty cell. When it stops it grows a pentomino, a tetromino, a trimino or a domino, provided those cells are empty. A group of stones with no liberty are captured and removed from board. When both players pass, each player counts the number of stones he has on board, plus the empty cells inside his territory (i.e., empty cells where the adversary cannot dispatch stones). Wins the player with more points.

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