Kaissa is a Chess variant based on a description in the novel The Players of Gor by John Norman. The board of the game is ten squares by ten squares, alternating red and yellow squares, just as there are red and yellow playing pieces. The pieces for attack and defence include Ubar, Ubara, Tarnsman, Scribe, Builder, Initiate, Spearman, Rider of High Tharlarion and Assassin. The two opposing sides, two cities, each at war with each other. The piece called the home stone in the game, is the most important piece in the game. It represents the heart of your city. It is that heart, home stone, you have to protect. It is also that heart, home stone, of your opponent's that you must capture. The end of the game, is when one opponent captures the other's home stone. The game comes with a cloth board and 42 flat cylindrical pieces.