最高位戦ルール

• Ari-Ari Rules (Open Tanyao, First set of Tiles Called Can Be Unrelated to Yaku)

• No Oka

• Uma (Placement Points) 10000 Points - 30000 Points

• Ippatsu, Ura Dora, Kan Dora, Kan Ura Allowed

• No ​Orasu Agariyame/Tenpaiyame (Forfeiting All Last Dealer via Win/Tenpai)

• Tenpai Renchan (Continuing Dealer via Tenpai)

• No ​Tochuu Ryukyoku (Abortive Draw)

• No Pao (Discarded Tile Solidifies a Yakuman)

• Stacking Yakuman Allowed

• No Kazoe Yakuman (Stacking 13 Han or More to Declare Yakuman)

• No Winning Kokushimusou on a Closed Kan
  ​Please see the current Saikouisen Competition Rules for more details

最高位戦Classic ルール
(最高位戦ルールとの違い)

• 順位点は、1位＋12P、2位＋4P、3位△4P、4位△12P

• ドラは最初の一種類に限る（カンドラ、裏ドラ　無し）

• 一発役　無し

• ノーテン罰符　無し

•   30符4ハン、60符3ハンの切り上げ　無し（子7,700点、親11,600点）   

• 連荘は親のアガリのみ

• 打牌に関する制限　無し（現物食い替えあり）

• リーチ後のアンカン　不可

•  リーチ者はアガった時以外は手牌を公開しなくて良い
  ※ノーテンリーチは罰則の対象外 

• チョンボ者にはゲームが終了し、順位が確定後に△16Pが課せられる

時間制限のあり

• Play consciously so that you can finish the Hanchan in time

• Have smooth movement and refrain from excessively taking time to think

• Abbreviate the Shiipai (Light shuffle before dropping tiles into auto table)

• Able to discard prior to taking your called tiles. Fuuro (Call Tiles) order is not
  enforced as long as the motion is done in a timely manner

• Move to the next turn without waiting for the Riichi stick to be placed is allowed

• Exchanging point sticks immediately is allowed when confirming a winning hand
  (No need to wait until all players fold their hand to confirm a winning hand)

• ​A watch without communication feature may be placed on the side table for timekeeping

その他

• Any other exceptions or changes with a ruleset will be communicated to all players prior the start of the game​