Swish is played on a 8x8 board using two pieces per player and 19 neutral pieces. The object of the game is to capture ten of the neutral pieces.
The players' pieces are placed anywhere on the outer edge of the board and the neutral pieces anywhere not on the outer edge. However, the player setting up the board does not have to place all the neutral pieces; after placement the other player decides whether to go first and choose the color to play, or to go second and take all the neutral pieces not placed.
On a turn a player moves a piece any distance in a straight line, ending on an empty space. However, either neutral or opposing pieces (but not both) may be jumped as long as they are all adjacent to each other; there may be empty spaces before or after them.