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Suji: Difference between revisions
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==Basic Theory== | ==Basic Theory== | ||
In short: when an opponent discards a tile, the same-suit tiles that are 3 numbers away become safer against that opponent. However, if the tile you are discarding is a 4, 5, or 6, you need both possible tiles that are 3 away discarded (e.g. 4-sou needs both 1-sou and 7-sou discarded) to become safer. The explanation is as follows: | |||
*The most common type of wait is an [[ryanmen|open]] [[wait]] (i.e. a [[ryanmen]] wait). An open wait is a wait that wins off two sides of a sequence, e.g. a hand containing {23}, or a hand containing {34}. | *The most common type of wait is an [[ryanmen|open]] [[wait]] (i.e. a [[ryanmen]] wait). An open wait is a wait that wins off two sides of a sequence, e.g. a hand containing {23}, or a hand containing {34}. | ||
*[[Shuntsu|Sequences]] are comprised of three sequential tiles. Therefore, an open wait will win off two tiles that are 3-apart. For example, {23} can win off either a 1 or 4 of the same suit. {34} can win off 2 or 5 of the same suit. This continues until you get the intervals of: 1-4, 4-7, 2-5, 2-8, 3-6, and 3-9. | *[[Shuntsu|Sequences]] are comprised of three sequential tiles. Therefore, an open wait will win off two tiles that are 3-apart. For example, {23} can win off either a 1 or 4 of the same suit. {34} can win off 2 or 5 of the same suit. This continues until you get the intervals of: 1-4, 4-7, 2-5, 2-8, 3-6, and 3-9. | ||
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**However, if a 1 is discarded, 4 does not become safer. This is because there are two different intervals for 4, that being 1-4 and 4-7. In order for 4 to be a "full" suji, both 1 and 7 have to be discarded. The same applies to 5 and 6. | **However, if a 1 is discarded, 4 does not become safer. This is because there are two different intervals for 4, that being 1-4 and 4-7. In order for 4 to be a "full" suji, both 1 and 7 have to be discarded. The same applies to 5 and 6. | ||
Note: suji also applies to the other forms of furiten. After an opponent declares [[riichi]], then any non-winning tile discarded by anyone becomes safe. Therefore, suji can be applied to | Note: suji also applies to the other forms of furiten. After an opponent declares [[riichi]], then any non-winning tile discarded by anyone becomes safe. Therefore, suji can be applied to those discarded tiles as well. So if an opponent declares riichi, and the next opponent discards a 4, then 1 and 7 are still considered suji. | ||
==Intervals== | ==Intervals== | ||