W Win Board Games
Home

Mahjong

Riichi mahjong is a probability and efficiency game. Experts maximize uke-ire (acceptance), count han/fu precisely, and fold when opponent riichi exceeds your expected value.

Quick winning principles

  • Keep 5-block shape: five groups plus one pair maximizes flexibility toward any winning hand.
  • Discard safe tiles late: genbutsu (tiles you discarded) and suji (3/6/9 offsuit) against riichi.
  • Count dora indicators and uradora before pushing marginal tenpai.
  • Riichi when your hand is closed, tenpai, and expected han justifies the 1000-point cost.

Ideal strategy

  1. 1

    Tile efficiency: use shanten reduction — each discard should minimize shanten while maximizing uke-ire. Prefer 3467 waits over 4578 when both reach tenpai.

  2. 2

    Riichi timing: riichi at tenpai with 3+ han expected or when dora are visible. Damaten (hidden tenpai) when you need flexibility or fear exhaustive draw.

  3. 3

    Defense: against riichi, fold if your expected points < 25% of opponent's expected win. Chase only with 2+ han guaranteed or mangan potential.

  4. 4

    Yaku planning: build toward riichi + pinfu + tanyao; avoid pointless yakuless tenpai. Sanshoku and ittsu are high-value speed yaku.

  5. 5

    Furiten awareness: never discard a tile you could win on; track all opponents' discards for furiten traps.

  6. 6

    Endgame: at exhaustive draw, tenpai pays 3000/1000 — sometimes tanyao speed beats slow han-heavy builds.