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Defense: Difference between revisions
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'''Suji''' focuses on taking advantage of the furiten rule, and its application to the "mahjong intervals". Most two-sided or better waits will wait on tiles in the same suji, e.g. a {23} wait wins off either 1 or 4. Therefore, if a player has discarded 4-pin, the 1-pin and 7-pin become safer against that player. Neither is perfectly safe, however. | '''Suji''' focuses on taking advantage of the furiten rule, and its application to the "mahjong intervals". Most two-sided or better waits will wait on tiles in the same suji, e.g. a {23} wait wins off either 1 or 4. Therefore, if a player has discarded 4-pin, the 1-pin and 7-pin become safer against that player. Neither is perfectly safe, however. | ||
Note that 4, 5, and 6 require two tiles to be considered suji. For example, discarding a 1-pin does not make 4-pin much safer, since the hand could contain a 4-7 wait. In order for 4-pin to be "full" suji, both 1-pin and 7-pin must be safe. | |||
Some suji are safer than others: | Some suji are safer than others: | ||
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*Suji 2 and 8, as well as full suji of 4/5/6, are the next safest. They can be targeted by a tanki, shanpon, or [[kanchan]]. | *Suji 2 and 8, as well as full suji of 4/5/6, are the next safest. They can be targeted by a tanki, shanpon, or [[kanchan]]. | ||
*Suji 3 and 7 are the most dangerous, though still reasonably safe. They can be targeted by a tanki, shanpon, kanchan, or [[penchan]]. | *Suji 3 and 7 are the most dangerous, though still reasonably safe. They can be targeted by a tanki, shanpon, kanchan, or [[penchan]]. | ||
Using suji on the riichi declaration tile is more dangerous than normal. This is because of the ryankan shape (e.g. 135, 246, or 357). Ryankans are often kept as they can improve [[tile efficiency]]. But if the hand reaches tenpai with a ryankan intact, then it must discard one of the tiles. In this case, a player can discard the 5 and wait on the suji tile 2. | Using suji on the riichi declaration tile is more dangerous than normal. This is because of the ryankan shape (e.g. 135, 246, or 357). Ryankans are often kept as they can improve [[tile efficiency]]. But if the hand reaches tenpai with a ryankan intact, then it must discard one of the tiles. In this case, a player can discard the 5 and wait on the suji tile 2. | ||