Last Updated: 2026-03-30

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509. Gameplay Decisions

509.1. In competitions, players are responsible for considering options before taking actions.
509.2. Once an action is communicated to an opponent, that action can't generally be taken back.
509.3. At low OPL, a player can reverse their most recent action and make a different decision for that action (including not taking it at all) as long as no new action has been taken by either player. The change in decision does not need to be immediate.
509.4. At high OPL, a player can reverse their most recent action and make a different decision for that action (including not taking it at all) if no new action has been taken by either player, a judge allows it, and the following is true:
509.5. Intentionally attempting to reverse decisions to gain information from an opponent is considered angle shooting. Players may not change their decisions based on an opponent's physical reaction or as a response to an opponent starting to take a game action. See 704.4. for more information on angle shooting.
509.6. While changing decisions as described above is allowed, players must still maintain an appropriate pace of play. See 703.2 for more information on Slow Play.
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