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Suji: Difference between revisions
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"Suji counting" is a strategy which is not directly related to suji. It basically states: as more types of tiles become safe, the more dangerous the non-safe tiles become. | "Suji counting" is a strategy which is not directly related to suji. It basically states: as more types of tiles become safe, the more dangerous the non-safe tiles become. | ||
In practice, this can be achieved by counting the number of visible suji. In other words, when more tiles are applicable for suji, the non-suji tiles become more dangerous.<ref>https://pathofhouou.blogspot.com/2020/05/analysis-tile-deal-in-rates-by-live-suji.html</ref> For suji counting, eighteen different suji are in consideration - six suji for each suit, and three suits total. | In practice, this can be achieved by counting the number of visible suji. In other words, when more tiles are applicable for suji, the non-suji tiles become more dangerous.<ref>https://pathofhouou.blogspot.com/2020/05/analysis-tile-deal-in-rates-by-live-suji.html</ref> For suji counting, eighteen different suji are in consideration - six suji for each suit, and three suits total. | ||
{| class="wikitable" | {| class="wikitable" | ||
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| Manzu (3 - 6) (6 - 9) || Pinzu (3 - 6) (6 - 9) || Souzu (3 - 6) (6 - 9) | | Manzu (3 - 6) (6 - 9) || Pinzu (3 - 6) (6 - 9) || Souzu (3 - 6) (6 - 9) | ||
|} | |} | ||
If either tile in the suji interval has been discarded before, then that interval can be eliminated. (E.g., if a 1 is discarded, the 1-4 interval is eliminated. If 4 is discarded, both 1-4 and 4-7 intervals are eliminated.) | |||
Say an opponent declares riichi on [[double riichi|turn 1]], discarding an honor tile, and your turn is next. There are 18 "untested" suji intervals. So if we assume the opponent has a ryanmen wait, there is only a 1/18 chance that any one of the untested suji intervals deals in. (A given ryanmen could be any one out of the 18 different suji intervals, so 1/18.) | Say an opponent declares riichi on [[double riichi|turn 1]], discarding an honor tile, and your turn is next. There are 18 "untested" suji intervals. So if we assume the opponent has a ryanmen wait, there is only a 1/18 chance that any one of the untested suji intervals deals in. (A given ryanmen could be any one out of the 18 different suji intervals, so 1/18.) | ||