The Further Evolution of Amateurs' Knowledge
(2011 - 2014)
2011 - Timing of the Guzumi
(Referenced by 191; 192; 732; 897) Guzumi @ : !!! In this section White basically gives atari on the hanezeki's tail after Black's guzumi. All other moves will lead to a change in the order of moves for a later played guzumi. !!! We are not convinced that our endgame is optimal. However, we tried to apply it equally to the different variations. In our opinion, White wins clearly here, perhaps by about ten points. We marked the approximately 20 points of White territory (/), which will disappear during the journey of the hanezeki's tail across the board. Please understand the order of moves shown here - with the guzumi first, then the push, then the hasami-tsuke late - in the historical context. |
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/// Guzumi @ : We think that Black now wins by a very small margin. |
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/// Guzumi @ : So, White will not really play at here, but must respond to the guzumi, with a move at . Black then continues with the "usual" Crosscut Sequence, starting with a move at ; this will result in a change in the order of moves with our solution (that Black wins by only three points). |
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However, Black's further destruction of White's territory with is more than over-compensated for by the fact that the fight gets closer, and closer, to the upper left corner, and so the potential of White's threats there increases, due to the presence of her -stones. So, White has the chance to attack Black's upper left corner, with (this move forces Black to live in the upper right), and . As shown earlier ( 434), this variation ends with five points for Black, according to our estimation. |
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/// Guzumi @ : |
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If Black insisted on saving his nakade stones, he would not be able to withstand White's forceful moves in the upper left corner successfully. Black would lose the game unnecessarily by about five points ( 389). |
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/// Guzumi @ : Once the Crosscut Sequence has been completed, Black no longer has any option; he loses his -group at the left edge outright. Here we tend to feel that White will get a sure win, by at least two points ( 224). |
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... the second one with , unforced giving atari inside the nakade. |
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/// Guzumi @ : Conclusion: Around move , the tables will turn. Black still destroys White's territory, while White occupies mostly neutral points. Probably White will answer the guzumi locally, because this leads to a change in the order of moves with our solution, and so to a better final result for her. If the hanezeki's tail comes very close to the upper left corner, White gains more by the resulting potential threats than she loses in territory. With the Crosscut Sequence, Black loses many of his earlier options, because this fixes the shape. White is now almost always expected to win, because her previous moves are found to be of more value for the endgame than Black's. The conclusion remains that the most favourable moment for playing the guzumi is indeed with move , immediately before the start of the Crosscut Sequence. | |