Table 1.

The rock–paper–scissors game, where (0,0) denotes a drawn round, (1, − 1) denotes a win for player 1 and (−1,1) denotes a win for player 2.

player 1	player 2
	rock	paper	scissors
rock	0,0	−1,1	1, − 1
paper	1, − 1	0,0	−1,1
scissors	−1,1	1, − 1	0,0