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The keima is less secure than the ikken tobi
   

While wikimasterediting the keima and ikken tobi pages, it occurred to me that we always say 'defend with ikken tobi' and 'attack with keima'. The reason for this would be that a keima can be cut more easily than the ikken tobi. However, if you bluntly try to cut these shapes, you will notice that cutting the keima depends on shicho whereas cutting the ikken tobi works regardless. A paradox?

See cut keima and cut ikken tobi.

--Dieter

dnerra: A nice observation! I think the answer is that cutting the keima, if it works, usually works far better -- if you take surrounding stones into account. Whereas one can often cut the iken tobi, without this doing any good to your stones. I think the situations I tried to describe in CuttingTheKeimaCanBeSevere and DoNotTryToCutIkkenTobi are quite typical.

Would you agree that this is a good explanation for the apparent paradox?

Dieter: Yes absolutely. Nice job !



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