From the idea of dividing up a pie fairly: one person cuts and the other chooses a slice.

pierule (pluralpie rules)

1. (games) A rule used in certainstrategy games for the purpose of fairness, where immediately after the first player's initialmove the opposing player may optionallyswitch, taking over the first player's role and position for the rest of the game.

   Synonym:swap rule

• komi

• puerile