Variations of Our Solution (IIIb)
Tricking KataGo (Triple-Ko)
VAR (C) (A) (.2) (.2) (.1)
(Referenced by 222fc) : ( 222bb) | |
: (A 222bw) During the investigations on the comparable position with the Guzumi Exchange ( 222go), I found that defending in the corner with the jump to would be much better for him than allowing the ko fight shown below. | |
: : : : (A 222bx ; B 222by) During the investigations on the comparable position with the Guzumi Exchange ( 222go), I found that connecting Black's stones on the outside would be much better for him than allowing the ko fight shown below. contains a larger threat against White's potential territory at the top, and so prevails over . : : | |
: : Jumping to , instead, will end even worse for him. : ( A 222bz ; B 222ca ; C 222cb ; D 222cc ; E 222cd) Please note that here, in the "classical" line of play without the Guzumi Exchange, KataGo (2021i) always favours - independent of the (reverse) komi - which is a remarkable difference to KataGo's evaluation when the Guzumi Exchange has taken place. We present the subvariations for the other mainly considered alternative options in descendant order of their final score. All of these will end with a White win. KataGo (2021i) found a decisive improvement for Black in the following subvariation. | |
: ( 118 222ce ; B 222dm) Guided by his experience with this position (at the left) after Black's guzumi at the right, Joachim suggested blocking with in the upper left. KataGo (2021i) also favours this block, which will result in a much better final score for Black than the sequences below, after KataGo (2021i) found a decisive improvement for Black. Black's descent to in the corner looks like being too slow, and so played too early. White will choose the Semeai Variation, being able to survice with her corner group in the hanezeki. However, Black would still be better than losing his large right-hand group outright in the Capture Variation, when White chose the correct continuation with the subvariation below. It seems very noticeable to us that one obviously must not follow KataGo's suggestions without further ado in positions that can only be reached after (multiple) mistakes on both sides. Presumably there is no need for the special neural network to analyse positions of this kind down to the very last detail. Adjusting the komi helps sometimes but is not a panacea. As a matter of course, Black would be able to capture White's stones in the upper left corner by playing the atari of . : (121 222do ; C 222dr) She might consider blocking at , instead, saving her stones at the top. She will lose only a few points, compared to the sequence below. However, Black's previous move lost one tempo in the Main Semeai, so White's best option is to occupy a liberty of Black's large group at the right, instead. : : : She might consider capturing the hanezeki's tail with , instead, also capturing Black's cut stones in the upper left corner. She will still be better than in the solution, but her win will not be as convincing as here (similar to the subvariation for ). Her gain in the upper left corner will roughly compensate for the loss at the right, caused by the dissolving of the hanezeki. : | |
: : : White will win the game by 19 points. | |