The value of a yakuhai pair: 1 han, easy to call or win on. Exception: If you aim for riichi and refuse to call, it may become dead. (But that is true of any pair.)

The value of a single yakuhai: One way to get a good shape (similar to a 2); no way to get a bad shape (dissimilar to a 2).

Nemata: "Usually, we think that 1 < single yakuhai < 2 < single renfonpai, but the influence of the rest of the hand is big." (Also: otakaze < 1)

Exception: 1 < otakaze < yakuhai

Redundant 1 or 2 due to very bad overlap.

Honitsu (i.e. honitsu chance, not necessarily confirmed)

Toitoi/chiitoi (if definitely chiitoi, then yakuhai < otakaze)

Big lead at or near all-last, save otakaze/yakuhai to help opponent cheap hands.

Saving safety tile in very bad haipai.

Already enough blocks?

Exception: otakaze < yakuhai < 1

Sticky iishanten, at or near.

Junchan

Sanshoku/ittsuu

Losing badly, need riichi, and not enough blocks.

Exception: Discard yakuhai first to deny pon. (Easier conditions for opponent renfonpai?)

Slow hand case: Losing badly, haipai needs tanyao and/or pinfu for mangan.

Fast hand case: Expensive hand losing substantial value if opened.

Pinfu looking for head

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Pub: 02 Sep 2023 02:24 UTC
Views: 163