Goal of the game
To leave your opponent without any possible move.
A square game board made up of rows and columns is initially completely filled with stones, alternating between black and white pieces.
Black moves first, by taking off one of his stones. He may only remove a stone from the middle of the board (the centre or a piece adjacent to the centre) or from one of the corners. White removes one of his stones that is adjacent orthogonal to the empty square created by Black. There should now be two empty squares next to each other.
From there on, players take turns making a move. To move, one jump one own stone over an opponent's stone into an empty slot right beyond. Jumps can only be orthogonal, not diagonal.
A player may make multiple jumps (thence making multiple captures) with the same stone in a turn, but only if all the humps are in the same direction (no turns). Making more than one jump (when possible) is optional, but the first jump (and capture) is mandatory. Pieces that are jumped are removed from the board.
When one player is unable to jump during his turn loses the game and the opponent wins.