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B Q M 21 Lower Right
Keywords: Life & Death
DaveSigaty: B 1 is not the only entry point in this formation but it is one of the basic starting points. What happens next? Should B start elsewhere instead?
DaveSigaty: White 2 on the wider side is perhaps natural. Black 3 will allow B to live. W 4 is one of a variety of counters but there is no way to prevent B from living if he is willing to do so on a small scale in gote.
This is perhaps W's strongest attempt to prevent B from living. However, B forms a seki with no problems.
This ko with B 3, 5, 7 is another very common idea for invading under a small knight enclosure. It is a more aggressive approach than just seeking a small life. B is happy to either live on a larger scale via the ko or take a suitable profit elsewhere in exchange for the corner. In this particular case where W has played the large and small knight combination, White has a problem trying to eliminate the corner aji. Black need not be in a rush to invade because there is no efficient follow-up play for W here that will prevent an invasion. Note as well that in all the variations above the marked W stone is not well placed. This is a copy of the living page "B Q M 21 Lower Right" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |