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3-4, One-Space High Approach, Two-Space High Pincer, One-Space Jump
When White jumps out like this, Black will take territory on the right. White can hope to get something back with a counter-pincer.
Up to 6 is now a joseki. The exchange 5/6 has a particular meaning - there is no reason for White instantly to defend 5. At this point a white lay at a would be good, if for example White has a stone at 4-4 in the upper left corner. If a counter-pincer such as a isn't a good idea, this may not be the best variation for White to choose.
If White played immediately at 5, it could be very good for Black to take instant action with 6. The marked black stone then looks light, rather than heavy. That is why White does something about the corner, as in the previous diagram.
White's options here include c (in reply to a peep at e, probably), and d for sabaki, as well as the routine b. So White typically waits to see how to play here.
When White just leaves the 3-3 stone, Black may exchange 1 for 2. This however will weaken the marked black stone. There is also some aji of White f.
This is a sequence up White's sleeve, making g and h miai. So the marked white stone isn't yet captured. This is a copy of the living page "3-4, One-Space High Approach, Two-Space High Pincer, One-Space Jump" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |