Between them they had, in the crusts, scratched a board for Zar. This resembles the Kaissa board. Pieces, however, may be placed only on the intersections of lines either within or at the edges of the board. Each player has nine pieces of equal value which are originally placed on the intersections of the nine interior vertical lines with what would be the rear horizontal line,
constituted by the back edge of the board, from each player's point of view. The corners are not used in the original placement, though they constitute legitimate move points after play begins. The pieces are commonly pebbles, or bits of verr dung, and sticks. The "pebbles" move first. Pieces move one intersection at a time, unless jumping. One may jump either the opponent's pieces or one's own. A jump must be made to an unoccupied point. Multiple jumps are permissible. The object is to effect a complete exchange of original placements. The first player to fully occupy the opponent's initial position wins.

Tribesmen of Gor