Variations of Our Solution (Ib)
KataGo's 2021 Solution
VAR (.3)
(Referenced by 58ee) : ( 58ai) We inserted this alternative move manually. It was hard work to identify KataGo's mistakes in these selfplay games. However, while commenting the created diagrams, we had to realise that we had been susceptible (mainly guided by wishful thinking) to "false positives" in the first pass through the variation tree of the selfplay games, i.e. seemingly potential errors KataGo's, but which lost their property on closer analysis. | |
: ( A 58aq ; B 58ar ; C 58bb ; D 58dc ; E 58dr) We first encountered this move when browsing through KataGo's favourite moves, being in KataGo's "Analysis Mode". All other alternative options - except , which is another genuine mistake - would result in changes in the order of moves with Our Solution - in principle. But KataGo took the opportunity to make mistakes in about half of the selfplay games. | |
: (A 58eb) In the series of selfplay games, KataGo often continued with the extension to , instead, which will result in a change in the order of moves. : | |
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: (130 58ec) : He must not capture at , instead. : : Continuing at in the upper left corner first, in order to connect at later, will not benefit White. The overall result of the game will not be affected, while White will lose massively in the Semeai Variation, due to Black's subsequent defense at . : Black is par with the Punishment Semeai Liberty Level, so he does not have any other choice. | |
: We present the ensuing sequence in the upper left corner continuously. | |
: : : : (146 58ed) The connection at is miai, due to White's earlier kikashi , . White will hane at . Please refer to the previous subvariation to see why Black would better if White had missed that kikashi. | |
Black must not play any reduction. White will block at after her decision point. | |
Capture Variation: Compared to the superordinate variation, ...
In total, Black gained four points. White + 2 => Black + 2 | |
Semeai Variation: Compared to the superordinate variation, ...
In total, Black lost two points. Black + 4 => Black + 2 | |