Variations of Our Solution (IIIb)
Tricking KataGo (Triple-Ko)
VAR (C) (A) (.2) (.2) (.2)
(.1)
: ( 222fc) | |
: Black does not have the time to give atari with or to descend to , instead, which both would result in the capture of White's stones in the corner. : : : (B 222fe ; C 222ff) However, as Joachim discovered when analysing Black's later subvariation below, this strategy - often useful elsewhere - is not applicable here. The same applies for White's ko threats in the left centre, which threaten to capture some Black stones there, in order to secure independent life for White's left-hand group. There is only one option left for White for winning the game: She has to capture the hanezeki's tail just now, as her very first ko threat. | |
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: ( A 222fg) However, as mentioned above, Black could do much better by ignoring White's very first ko threat. :
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: Simply descending to , instead, would lose this additional ko threat. Black might consider pushing to at the top. This move would revert to the superordinate variation, after the sequence from to . | |
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: : (164 222fh) Playing at , instead, will have a comparable effect. However, Black must not let White live at the left, as he will be unable to win the semeai with White's centre group. : Alternatively, Black might consider playing the peep of , instead. White will answer locally, with . Ending the ko fight by capturing with will not benefit White. She will lose a few points overall after Black's atari with . just because she will have to dissolve the hanezeki. : Please note that this is Black's only ko threat at the right side of the board that is not related to the (surrounding positions of) the hanezeki. : |
: : We are sure that ... White will win the game by more than 15 points. | |