Variations of Our Solution (Ib)
KataGo's 2021 Solution
VAR
(.3)
(.3)

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I simply overlooked that Black can defend his corner even after a White attacking move at the left or upper edges. Black must defend in the left centre, instead.
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Black must not play any reduction. After her decision point, White will block at |
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Capture Variation: Compared to the super²ordinate variation, ...
In total, White gained one point. White + 1 => White + 2 |
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Semeai Variation: Compared to the super²ordinate variation, ...
In total, White lost one point. Black + 7 => Black + 8 |

58bc
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136
58bn
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at the upper edge.


