8. Three-player chess variants
Chess variants for three players. All players play against each other.
The game finishes when someone gets checkmated, and:
the one who gives checkmate wins (gets 1 point),
the one who gets checkmate loses (gets 0 point),
and the third player gets 1/2 point.
More detalied rules: Three-player chess. These variants differ only in the board and the movement of the pieces, the general rules are the same.