Variations of Our Solution (Ib)
KataGo's 2021 Solution
VAR (.3) (.3)
: ( 58ct) | |
: : Compared to the superordinate variation, Black lost one point of territory in the left centre (in the Capture Variation). | |
In order to defend his potential territory at the left side of the board, Black needed five moves (). White needed four moves () to accomplish the same task at the right side of the board. It's Black's turn, so all defensive moves can be played in order. Please note that Black must not connect his stone in the lower right, as this would lose two tempi in the Main Semeai - but he has only one to spend. | |
White has five territory-destroying moves at the left side of the board (), all gaining one point (in the Capture Variation). Black would be able to destroy four points of White's territory in the upper right, and has the connection of in the lower right, which is worth two points. This implies that White must never start the mutual reduction of opponent's territory. | |
: Please note that Black lost one tempo in the Main Semeai by this move, and is par with the Punishment Semeai Liberty Level thereafter. | |
: : She lost one tempo by this move, but there is nothing left Black could do, as all borders of White's territory in the upper right are already closed. | |
Black plays 0/1 reductions. | |
Capture Variation: Compared to the superordinate variation, ...
In total, White gained one point. White + 1 => White + 2 | |
Semeai Variation: Compared to the superordinate variation, ...
In total, White lost one point. White + 1 => Jigo | |