Suji: Difference between revisions

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→‎Other suji: +ura suji
(→‎Other suji: +ura suji)
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=== Musuji ===
=== Musuji ===
Musuji {{kana|無スジ}} is a tile that is not suji.
Musuji {{kana|無スジ}} is a tile that is not [[genbutsu|100% safe]] and not suji.
 
If an opponent discards multiple musuji tiles in a dangerous situation (e.g. after a riichi), then it's likely that they are in tenpai as well.


=== Ura suji ===
=== Ura suji ===
Ura suji is a theory which suggests that: when a middle tile is discarded relatively early, unsafe suji intervals that are nearby become more dangerous. For example, say an opponent had a 35 [[kanchan]] in their hand. If a 2 is drawn, then 5 would be discarded from the "235", leaving just a 23 shape. The 23 waits on a 1 or 4, so if a 5 is discarded relatively early, then 1-4 becomes more dangerous.
*Discarded {{#mjt:4p}} makes {{#mjt:58p}} more dangerous.
*Discarded {{#mjt:6p}} makes {{#mjt:25p}} more dangerous.
*Discarded {{#mjt:5p}} makes {{#mjt:14p}} and {{#mjt:69p}} more dangerous.
In the modern day, ura suji is often disregarded. If an opponent discards 5-pin early, then declares riichi, then non-suji 4-pin would be a dangerous tile. However, a non-suji 4-man, 5-man, 4-sou, etc. would also be dangerous tiles. Therefore, knowing about ura suji would not change your behavior. If you were folding, you wouldn't discard any musuji unless you had to. If you were attacking, you would discard ura suji anyways, because an ura suji is not much more dangerous than a regular non-suji tile.


== External links ==
== External links ==
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