WRC 2025 Rules and Standards of Conduct

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ARMO 2025 will utilise the standard 2025 WRC ruleset.

The WRC ruleset is the first international ruleset to be certified for competition play by authorities in Japan, Europe and the Americas. Since its introduction at the first World Riichi Championship in 2014, it has been updated and improved year over year to be a definitive guide to riichi mahjong play.

Standards of Conduct

All players are required to adhere the WRC Standards of Conduct at all times throughout the event. Failure to abide by these standards of conduct may be subject to penalty (including disqualification without refund and immediate expulsion from the venue) at the sole discretion of the tournament organisers. We are committed to building a safe and welcoming environment for all, and we operate a zero tolerance policy towards abuse, intimidation, or harassment of players or staff.

Gameplay Guidlines

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All players are also strongly encouraged to follow the gameplay guidelines during play. These guidelines have been devised to ensure that games proceed smoothly, and to protect the integrity of the game by preventing opportunities for cheating, collusion, or common mistakes.