:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A)

: ( 222jc)
Black inserts Michael Redmond's kikashi in the bamboo joint.

: (A 222jq)
White answers with the solid connection.

Playing the atari of , instead, is not advisable here. White would lose one point overall unnecessarily.


: (113 222jr)
It is best for Black to descend to the left edge, defending his territory in the upper left corner.

Playing atari at White's two stones in the lower left would be too early, and mistakenly lose two points overall.


:
White connects her single stone in sente.

:
Black must defend against White's throw-in at .

:
White protects her weakness in the upper right.

: (121 222js)
Black gives atari at White's two stones in return.

Alternatively, Black might consider defending in the left centre with immediately. However, this move will increase White's score in the Semeai Variation, while not affecting the overall result of the game (correct line of play below provided).


: ( C 222jt)
White further continues with the Main Semeai.

However, she must not let Black occupy the point of . White would gain one point overall, if she played the wedge in the left centre at , instead.

:
White starts the endgame at the left side of the board "early".

:
The Main Semeai continues.
After her decision point, White will hane at .

In principle, we have reached a change in the order of moves with the main line of a later subvariation, where White occupied the guzumi point "late" ( 222my).
In comparison, White got an additional point of territory in the upper left, but did not capture a Black stone there, so the net effect of this difference is zero.

The final scores of the game will become White + 3 / Jigo.

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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