Defense: Difference between revisions

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{{main|Suji}}
{{main|Suji}}


'''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 that are 3 numbers apart. For example, a {23} wait wins off either a 1 or 4 (4-3=1). Therefore, if a tile is safe, the tiles that are 3 apart from that tile are safer - the intervals of 3 are called "suji". 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.
Note that the middle tiles (4, 5, 6) require two tiles to be considered safe suji. A discarded 1-pin by itself 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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