Menzenchin tsumohou

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Menzenchin tsumohou
Type Yaku
Kanji 門前清自摸和
ツモ
English Self draw
Value 1 han (closed only)
Speed Varies
Difficulty Varies

Menzenchin tsumohou (門前清自摸和), otherwise referred as menzen tsumo or even simpler tsumo (ツモ), is a yaku involving closed hands. With a tenpai hand, a player attains this yaku by winning with a drawn tile.

Formation

With this yaku, all closed hands qualify for menzen tsumo. In fact, a closed hand may instantly win by self draw, even when it is the only yaku for the hand.

No open hand may qualify for this yaku. The instant a player calls on a discarded tile, then the player forfeits the right to declare this yaku until the next hand. The same applies to riichi.

With riichi

This yaku is typically accompanied with riichi. Of course, the use of riichi is only advisable on the current state of the game: current point standing, other player riichi calls, potentially threatening hands, tile waits, and tile availability. At times, it may simply be advisable to utilize damaten, rather than putting one self at risk.

External links

Menzenchin tsumohou in Japanese Wikipedia