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Suji: Difference between revisions
→Defense
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Defending using suji essentially presumes a player to be utilizing either the wait pattern of [[ryanmen]], [[ryanmenten]], [[nobetan]], [[sanmentan]], or some other variation. Under the rule of [[furiten]], if a player discarded a waiting tile, then the player's ability to call "ron" is disabled. Therefore, certain tile discards may rule out certain mahjong intervals. | Defending using suji essentially presumes a player to be utilizing either the wait pattern of [[ryanmen]], [[ryanmenten]], [[nobetan]], [[sanmentan]], or some other variation. Under the rule of [[furiten]], if a player discarded a waiting tile, then the player's ability to call "ron" is disabled. Therefore, certain tile discards may rule out certain mahjong intervals. | ||
For example, take the 1-4-7 interval. If a 4 is discarded, this makes 1 and 7 safer, since if the opponent has a 23 or 56 as their final shape, they would be furiten on the 4. Note that a 7 being present does not necessarily make a 4 safe, as they could still have a 23. Therefore, both a 1 and 7 need to be present in order for 4 to be safer. The same applies to the other intervals. | For example, take the 1-4-7 interval. If a 4 is discarded, this makes 1 and 7 safer, since if the opponent has a 23 or 56 as their final shape, they would be furiten on the 4. Note that a 7 being present does not necessarily make a 4 safe, as they could still have a 23. Therefore, both a 1 and 7 need to be present in order for 4 to be safer. In such a situation, the 4 is referred to being nakasuji. The same applies to the other intervals. | ||
Of course, one should not be necessarily dependent on these intervals alone, as some waiting patterns are immune to suji, such as a [[kanchan]] or [[shanpon]]. | Of course, one should not be necessarily dependent on these intervals alone, as some waiting patterns are immune to suji, such as a [[kanchan]] or [[shanpon]]. A [[toitoi]] hand is immune to suji. | ||
Because of this, not all suji tiles are equally safe. Suji terminals (1 and 9) are the safest, as the only shapes that can be waiting on them are a [[tanki]] or [[shanpon]]. Nakasuji (4, 5, and 6) are the next safest, as they add the possibility of a [[kanchan]]. Suji 2 and 8 follow closely behind. This is because to have a kanchan on a middle tile, for example, a 4, they would have had a 135 shape in their hand. It's generally seen as better to wait with the 13 shape, since the 4 is more useful and less likely to be discarded, so a middle tile kanchan suji trap is slightly less likely. Finally, suji 3 and 7 are the most dangerous (though still reasonably safe), as they add the chance of a [[penchan]] wait. | |||
===Checklist=== | ===Checklist=== | ||