Stlts is a strategic board game, played on a 12x12 checkerboard with cork-centered pieces into which pins are placed. The object of the game is to take all the opponent's pieces. Players take turns. White begins. On each turn a player may either - insert a pin of either color in one of their pieces, - move one of their pieces. A piece may move to any square that can be reached by a sequence of one-square horizontal and vertical moves where the maximum number of vertical moves is the number of white pins in the piece and the maximum number of horizontal moves is the number of black pins. (A piece with no pins cannot move) A piece may not move through a square occupied by another piece of either color. To take an opponent's piece a player moves to that square and removes it.