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Tenpai: Difference between revisions
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Overall, the recognition of a tenpai hand is one of the most important concepts of the game. Without this recognition, then a player lacks the ability to make the best decisions on which tiles to [[tile efficiency|best discard]]. | Overall, the recognition of a tenpai hand is one of the most important concepts of the game. Without this recognition, then a player lacks the ability to make the best decisions on which tiles to [[tile efficiency|best discard]]. | ||
== Tenpai conditions == | |||
Tenpai occurs under any of the four following conditions: | |||
# Three tile groups and a pair (jantou). The fourth tile group needs completion. Numerous [[machi|wait patterns]] fall under this condition. | |||
# Four tile groups and a single tile ([[tanki]]). Completion occurs when a duplicate of the pair is drawn or discarded. | |||
# [[Chiitoitsu]]. Six distinct tile pairs and a single tile (also tanki). | |||
# [[Kokushi musou]]. | |||
::Twelve different [[terminal|terminals]] and [[jihai|honors]], by which one is paired. | |||
::Or, the hand has thirteen different terminals and honors, by which any of them needs to be paired. | |||
== Example tenpai hands == | == Example tenpai hands == | ||
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The last three examples are all open hands. Both 4 and 5 may employ [[yakuhai]]. Example 4 definitely has a yaku, via the open call on the [[hatsu|green dragon]]. Example 5 could have a yaku, if the hand is seated west or the game is in the [[west round]]. The last example uses [[tanki|hadaka tanki]], by which four tile calls were used to achieve tenpai. All that remains closed is a single tile, that needs to be matched with the exact same tile type. However, example 6 does not have yaku as it stands. It'll require [[haitei]], [[houtei]], [[rinshan]], or [[chankan]] to gain yaku. | The last three examples are all open hands. Both 4 and 5 may employ [[yakuhai]]. Example 4 definitely has a yaku, via the open call on the [[hatsu|green dragon]]. Example 5 could have a yaku, if the hand is seated west or the game is in the [[west round]]. The last example uses [[tanki|hadaka tanki]], by which four tile calls were used to achieve tenpai. All that remains closed is a single tile, that needs to be matched with the exact same tile type. However, example 6 does not have yaku as it stands. It'll require [[haitei]], [[houtei]], [[rinshan]], or [[chankan]] to gain yaku. | ||
=== Jantou === | === Jantou === | ||