Variations of Our Solution (IIIb)
Tricking KataGo (Triple-Ko)
VAR (C) (A) (.2) (.2) (.2)
: ( 222gn) | |
( B 222gp ; C 222gr) Extending to , instead, would revert to the sequence below. However, we found that it would be better for Black to give atari at White's single stone in his corner first, with a move at . Jumping to at the second line is another idea, but slightly worse than . | |
: (A 222gs) Capturing the nakade with , instead, would be too late now. The window of opportunity has closed. : ( 110 222gt ; 111 222gu) Black's solid connection at the top, securing a second eye there, was once favoured by KataGo (2020). However, KataGo (2021i) found that immediately connecting his partial groups in the upper left corner with would be better. A move at , instead, seems to have a stronger effect on White's centre group, while also securing Black's connection in the corner. However, as it will turn out, it is slightly worse than the alternative subvariation. : He will be unable to fight - and win - the ko after giving counter-atari with . | |
: (A 222gv ; B 222gw ; C 222gx ; : D 222gz) For a more detailed analysis, please see the comparable position after the capture of the nakade ( 222hs). This connection in the upper right is preferred by KataGo (2020) with komi = 1 and also with komi = 0. The order of subvariations follows the preferences of KataGo (2020) when increasing the reverse komi. Connecting at in the upper left corner is even worse for her, resulting in a Black win. White's best option here is the peep at at the upper edge. It follows a more or less "peaceful" sequence that results in a convincing White win. Both ko fight options in the upper left corner are not as good as in the comparable lines where the nakade has been already captured, due to the potential shortage of liberties around her still separated groups at the left side of the board. | |
: : : : : | |
: | |
Black must not play any reduction. | |
: White might also wait until after her decision point. | |
Capture Variation: Compared to the super²ordinate variation ...
In total, White lost three points. White + 3 => Jigo | |