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scoring riichi

Sanbaiman

三倍満
(さんばいまん)

By Kenji Tanaka · Updated

Definition

Sanbaiman is triple mangan: 11 to 12 han, a fixed 24,000 (36,000 from the dealer). It sits just below the yakuman cap and usually means a monster flush or a riichi hand where the ura dora landed hard. One more counted han rolls it into kazoe yakuman under most rules.

Sanbaiman

Sanbaiman (三倍満) is a mahjong hand worth 11-12 han that pays triple mangan: 24,000 points for non-dealers or 36,000 points for the dealer.

How Sanbaiman plays out at the table

Sanbaiman represents the third tier in the standard point progression system used in modern mahjong scoring. The term literally translates to “three times full” (san = three, bai = times, man = full), referring to its payment structure being three times the base mangan payout.

Scoring Structure

In standard mahjong rules, hands are evaluated on two primary metrics: han (the number of winning combinations or patterns achieved) and fu (the base points calculated from tile combinations). A hand qualifies as sanbaiman when it reaches 11 or 12 han, regardless of its fu value.

The payment breakdown follows this pattern:

  • Non-dealer (ko) receives 24,000 points total: the discarder pays all 24,000 on ron, while on tsumo the dealer pays 12,000 and each non-dealer pays 6,000
  • Dealer (oya) receives 36,000 points total: the discarder pays all 36,000 on ron, or each opponent pays 12,000 on tsumo

This scoring system was standardized to simplify gameplay by creating fixed payment tiers rather than calculating points through the traditional han-fu multiplication formula.

Relationship to Other Hand Values

Sanbaiman occupies a specific position within the hand-value hierarchy. Below it sits baiman (8-10 han, worth 16,000/24,000 points) and haneman (6-7 han, worth 12,000/18,000 points). Above sanbaiman is yakuman (13+ han or special winning conditions, worth 32,000/48,000 points for the basic version).

The progression creates a clear ladder: mangan (5 han) → haneman (6-7 han) → baiman (8-10 han) → sanbaiman (11-12 han) → yakuman (13+ han or special).

Achieving Sanbaiman

Reaching sanbaiman requires either:

  • Accumulating 11 or 12 han through standard yaku combinations
  • Stacking several strong yaku with dora, such as riichi, chinitsu (6 han closed), toitoi, honroutou, and multiple dora or ura dora

Common paths to sanbaiman include stacking multiple yaku like Riichi (1 han) + Chinitsu (6 han closed) + Ittsu (2 han closed) + Pinfu (1 han) plus dora, which totals 10 han before dora and approaches the threshold.

Sanbaiman at the table

A player declares riichi and wins by tsumo with Honroutou (2 han), Toitoi (2 han), Shou Sangen (2 han), two dragon yakuhai (2 han), and Riichi (1 han), totaling 9 han. This would be baiman, not sanbaiman.

However, if that same player instead completes a hand with Honroutou (2 han), Toitoi (2 han), Shou Sangen (2 han), two dragon yakuhai (2 han), Riichi (1 han), Menzen Tsumo (1 han), and two dora, reaching 12 han, the hand would qualify as sanbaiman and pay the higher amount.