Toitoihou: Difference between revisions

m
No edit summary
Line 23: Line 23:


=== Viability ===
=== Viability ===
Naturally, this yaku is reasonable if your hand contains many triplets and/or pairs. Note that toitoi looks easier than it actually is. While you have access to pon to complete triplets, your opponents might not discard the tiles that allow you to pon in the first place. This is especially true with middle tile pairs (pairs made of tiles from 3-7); since the middle tiles are likely to be kept in an opponent's hand, they are hard to pon, making this yaku slow to complete.
Naturally, this yaku is reasonable if your hand contains many triplets and/or pairs. Note that toitoi looks easier than it actually is. While you have access to pon to complete triplets, your opponents might not discard the tiles required to pon in the first place. This is especially true with middle tile pairs (pairs made of tiles numbered from 3-7); since the middle tiles are likely to be kept in an opponent's hand, they are hard to pon, making this yaku slower to complete.


In addition, a hand with many pairs can also form [[chiitoitsu]]. The (very rough) rules of thumb are:
In addition, a hand with many pairs can also form [[chiitoitsu]]. The (very rough) rules of thumb are:
*If you have 4 pairs and one turns into a triplet, you should probably go for a regular hand structure. This may or may not be toitoi.
*If you have 4 pairs and one turns into a sequence or triplet, you should probably go for a regular hand structure. This may or may not be toitoi.
*If you have 5 pairs, you should likely go for chiitoitsu. Keeping the option for toitoi is fine (e.g. 4 pairs, 1 triplet, 2 lone tiles) so long as the pairs are available to pon.
*If you have 5 pairs, you should likely go for chiitoitsu. Keeping the option for toitoi is fine (e.g. 4 pairs, 1 triplet, 2 lone tiles) so long as the pairs are available to pon.
*If one of the pairs cannot be turned into a triplet, because both remaining tiles of the pair are [[Kabe#Visible TIles|visible]]), then favor chiitoitsu.
*If you have 4-5 pairs, and one of the pairs cannot be turned into a triplet, because both remaining tiles of the pair are [[Kabe#Visible TIles|visible]]), then favor chiitoitsu.


=== Compatibility ===
=== Compatibility ===
695

edits