Defense: Difference between revisions

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{{main|Kabe}}
{{main|Kabe}}


Kabe is a tactic similar to suji. If all four copies of a tile are visible, then it is impossible to have a ryanmen wait on certain tiles nearby.
Kabe is a tactic similar to suji. If all four copies of a tile are visible, then it is impossible to have most types of sequence wait on certain tiles nearby.


For example, if you can see all four copies of 3-pin, then 1-pin and 2-pin cannot possibly be part of a ryanmen wait. This is because no opponent can possibly have a 23 or 34 shape, because no opponent can have a 3 in the first place. Tiles towards the middle, such as 4-pin or 5-pin in this case, are not much safer, similar to how half suji are not much safer.
For example, if you can see all four copies of 3-pin, then 1-pin and 2-pin cannot possibly be part of a sequence wait. This is because no opponent can possibly have a 23 or 34 shape, because no opponent can have a 3 in the first place.  


Like suji, other waits are still possible. Kabe is comparable to suji (though kabe is safer), and should be used in a similar fashion.
Tiles towards the middle of the "blockade", such as 4-pin or 5-pin when all four 3-pin are visible, are not much safer, similar to how half suji are not much safer.
 
Like suji, other waits - specifically, waits that are not sequences - are still possible. It is also possible to target 3 or 7 with a [[penchan]]. Overall, kabe is comparable to suji (though kabe is safer), and should be used in a similar fashion.


==The ways of defense and offense==
==The ways of defense and offense==
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