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Riichi strategy: Difference between revisions
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→(Average) riichi criteria
(add the standard riichi criteria (found in many mahjong strategy books)) |
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* When first to tenpai, good wait (>= 6 tiles), 1-4 han after riichi. Even a riichi-only hand with a [[ryanmen]] wait is positive value. | * When first to tenpai, good wait (>= 6 tiles), 1-4 han after riichi. Even a riichi-only hand with a [[ryanmen]] wait is positive value. | ||
* When first to tenpai, bad wait, 2-4 han after riichi. A 2 han 40 fu hand (e.g. riichi tanyao) is also stronger than damaten. | * When first to tenpai, bad wait, 2-4 han after riichi. A 2 han 40 fu hand (e.g. riichi tanyao) is also stronger than damaten. | ||
* When declaring chasing riichi, with a hand worth pushing, | * When declaring chasing riichi, with a hand worth pushing, if it's at/below mangan post riichi. | ||
'''Don't riichi:''' | '''Don't riichi:''' | ||
* With haneman | * With a bad wait riichi-only hand. | ||
* With a mangan (4 han 30 fu) hand with a bad wait. | * With haneman or higher hands. | ||
* With an extreme amount of upgrades. The amount of upgrades need to be very high. In the early game, to delay tenpai there should be: 6 types of tiles (~24 tiles total) for a wait upgrade, or 4 types (~16 tiles total) to double value. | * With a mangan (or 4 han 30 fu) hand with a bad wait. | ||
* With an extreme amount of upgrades. The amount of upgrades need to be very high to skip tenpai. In the early game, to delay tenpai there should be: 6 types of tiles (~24 tiles total) for a wait upgrade, or 4 types (~16 tiles total) to double value. | |||
* After point standing analysis. You don't need to riichi with a large lead in all last, or if dama would result in you taking 1st during all last. | * After point standing analysis. You don't need to riichi with a large lead in all last, or if dama would result in you taking 1st during all last. | ||