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Answer Keima with Kosumi
Path: GoProverbs · Prev: PlayAtTheCentreOfThreeStones · Next: RespondToAttachmentWithHane
Difficulty: Advanced
Keywords: Shape, Proverb
This means to play kosumi (diagonal move) when your opponent plays a keima (knight's move) approach to your stone. Your kosumi will be on the point that the approach aimed at. It also aims at a shoulder hit (katatsuki) against your opponent's stone.
Here's an example. Black 1 is played to reduce White's framework. White 2 is correct shape in reply. Charles Matthews. Take for example the following situation that often arises in a handicap game:
White approaches at 1 (keima in relation to Black's corner stone). Next Black plays at 2 answering a keima with kosumi. After White 3 and Black 4, White will stabilize her group with a play around a. Note that the aim of Black 2 is not to secure territory in the corner. White can still invade at b later on. Instead it denies White 1 access to the corner, thus keeping this stone from easily securing a base: the white group remains weak. --ArnoHollosi, 1d BillSpight: Actually, Black 2 is a kosumitsuke. I would have thought that answering keima with kosumi meant something like this:
But this, while joseki, is slow, and is usually avoided. The kosumi-tsuke is good to know, but also relies on the surroundings. You would not typically respond with either kosumi or kosumi-tsuke to a keima kakari. So how come this is a "proverb"? Aside from here, I have seen it only on Jan van der Steen's list, and did not find an explanation there. The other way around makes more sense:
Black 2 is a keima response to the kosumi of White 1. That is joseki. Oct., 2001: The light dawns!
In this situation Black answers the keima of White 1 with the kosumi of Black 2. This is a common joseki. (These days, Black 2 is often omitted or delayed. There are other good options for Black, too.) Material moved to keima slide and ogeima slide by Charles Matthews. Path: GoProverbs · Prev: PlayAtTheCentreOfThreeStones · Next: RespondToAttachmentWithHane This is a copy of the living page "Answer Keima with Kosumi" at Sensei's Library. ![]() |