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Of course, knowing the hand's [[tile acceptance]] is also important. A 1-shanten hand with tile acceptance = 2 is worse than a 2-shanten hand with tile acceptance = 20.
Of course, knowing the hand's [[tile acceptance]] is also important. A 1-shanten hand with tile acceptance = 2 is worse than a 2-shanten hand with tile acceptance = 20.


===Iishanten Peak Theory===
Going from 1-shanten to tenpai is the slowest part of most hands.  
Going from 1-shanten to tenpai is the slowest part of most hands.  
* A hand that is 2-shanten (or higher) will have a higher # tile acceptance. Therefore, it is faster to progress from 2-shanten -> 1-shanten than it is 1-shanten -> tenpai.  
* As a hand lowers its shanten, its tile acceptance lowers. A 2-shanten hand will have a higher acceptance than 1-shanten hand, meaning it is faster to progress from 2-shanten -> 1-shanten than it is 1-shanten -> tenpai.  
* A hand in tenpai has a lower # tile acceptance, but it can call [[ron]] freely, which adds a lot to hand speed.
* While a hand in tenpai has an even lower # tile acceptance, it can call [[ron]] freely, which adds a lot to hand speed.


Therefore, maximizing acceptance at 1-shanten is ''typically'' best for [[tile efficiency]].
Therefore, maximizing acceptance at 1-shanten is ''typically'' best for [[tile efficiency]].
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