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B Q M 15
This comes from my game in the second round of the Moscow tournament, against a 1 kyu, who has already 2200 points EGF rating, so he's rather 2 Dan. Early in the game, I made a mistake in joseki. In the end, the result favoured ... me. I will discuss the several mistakes made, and I invite you to comment on them. If possible, can you give an estimate of how bad each mistake is in points ?
White adopts a SanSan strategy. I am surprised by 4, since I don't know it.
The marked move would now be joseki. I thought it was submissive.
Fighting spirit urged me to block at 1. This was a mistake and my opponent knew how to punish it. Pulling back to A and allowing him to cross underneath was out of the question, if only for reasons of shape. A Russian 5-Dan told me it was probably best to abandon the bad move at 1 and simply block at B. White gets the advantage, but the game is still playable (for an amateur).
So again, fighting spirit makes me play 1. Of course White cuts at 2 and I cut at 3.
BillSpight: The Suzuki-Kitani "Small Joseki Dictionary" (Joseki Kojiten) gives the following variation:
I confess I would not have found B 1 in a real game. Does anybody know how Black should continue if W 2 is at 4? Perhaps the following?
Var 1 works if the ladder at A is favorable. If not, then White can extend at 7. So if the ladder is unfavorable, you have to cut. Kogo's Joseki Dictionary
A peaceful continuation now lies in Black playing at A. Again White would be better off, but the game remains playable.
A 4-Dan commented that 8 would have been better at A.
4 at 1. White has 10+ points. Black has a thick wall facing the center. White can cut at A, but that would only please Black, since he'll sacrifice two stones for more thickness towards the right. This result favours Black, but the difference is not so big, I think. Anyway, not something to repeat. BillSpight: The fact that White does not now want to cut at a shows the futility of W 6 - 8 in the previous diagram. If White pushes through with 6, she should atari at a right away.
Also, W 2 - 4 in this diagram is premature (if correct). Yes, it is sente, but not urgent, and there are larger plays about (such as wariuchi on the right side).
I'm not sure if W 1 is sente or not, but if it is, isn't this better than capturing the marked stone? And if it is gote, then it is clearly better than doing so (by definition).
This is a copy of the living page "B Q M 15" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |