Gess Gess Gess is a cross between Go and Chess. It is played on a Go board, with Go stones, but the stones occupy the centres of the squares rather than the intersections of the lines on the board. Any three by three block of stones which contains only stones of your colour or empty spaces is your piece.
Pieces move in a way defined by the cells in it that are occupied by stones.
I won't give all the details or all the rules here. Gess at the Chess Variant Pages . The original article which introduced the game. Below is my Gess applet. The button launches a separate window containing the board.