Variations of Our Solution (IIIb)
Tricking KataGo (Triple-Ko)
VAR (C) (A) (.2) (.2) (.1)
(.1)
: ( 222bv) | |
: (123 222cf ; A 222dd)
For a long time, we thought that White's hane at in the upper left corner were best, resulting in White winning the game by a large margin. However, if White continued with the Main Semeai, instead, she would benefit by one point overall (compared to the correct continuation for Black below). : (B 222df ; 123 222dg) If he played the large endgame move at , instead, he would again fall prey to White's hane in the upper left corner. Black should have played his safety-first move in the upper left corner, frustrating White's hopes to successfully fight a ko there. Please note that White's previous block at the top erased Black's chances to fight a semeai with White's centre group. : ( 123 222dh) However, this push is not as forcefully as the previous one, so Black should have played his safety-first move in the upper left corner, again. : ( 123 222di) However, she should have punished Black for his previous mistake by starting the ko fight in the upper left corner. : (C 222dk) He must not allow White to start the approach-move ko in the upper left corner. : | |
: : : Please note that capturing White's stones in the upper left corner with is still not feasible for Black here. He would lose two tempi in the Main Semeai, which is one too many to not fall prey to the Punishment Semeai. : | |
Black must not play any reduction. Due to the seki in the upper left corner, White will choose the Capture Variation. After her decision point, White will descend to at the upper edge. Black will connect at . | |
Capture Variation: Compared to the super²ordinate variation ...
In total, White gained six points. Jigo => White + 6 | |