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PGB251
Both sides play awfully but white definitely outplay black. Oh, no. I had to say that black loses points with every move. White 1 should have been at 'a' since it was a sente threatening to capture 3 black stones. Then white had to play at 2 to prevent opponens sente at the bottom. Black 2 is definitely a mistake showing lack of technique. How should have black played here? See next diagram.
Two stones that black sacrificed are balanced by two white moves in his own territory, so the score remains the same. Moreover, Black closed his territory keeping sente with 7 and this is a gain, especially when white's 7 is sente as well. Double sente moves are the largest on the board.
BillSpight: B 1 is a wonderful tesuji! :-) Black should take his sente with B 1 - W 2 and then tenuki and play the biggest move at 3, leaving the tesuji behind as aji (Next diagram).
Then White has a 1 point sente.
Black 6 is very small, since maximum that white can get there was one point gote. White would not defend the stone under atari since it has very small value. Bill: 2/3 point by miai counting. White 7, black 8 are small too. There are much more important moves at 'a' and at the bottom. This is the quality of the play of IGS 5k level. Quite bad even taking into account that the game is very fast. Bill: W 7 - B 8 are miai. W 7 is worth 0, B 8 is worth 1 point. 9-10 exchange is sente for white giving him 1 point. White 9 is not the best and could be played later but it is a plausible move. There is no objection to black's 10. It is important, otherwise a large group would be cut from the main forces and even in the case it would survive, black will have to waste moves to take one of the dead white's groups from the board. Next diagram is PGB241 . This is a copy of the living page "PGB251" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |