:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A) (.2) (.2) (.2) (.2)

(.2)

: ( 222hm)
Black connects immediately.

: (A 222hq)
White initiates the ko fight in the upper left corner.

She might kindly offer Black a "peaceful" path to defeat by connecting at in the upper right, so continuing with the Main Semeai.

:
Black has to play this atari sooner of later.

: (A 222hr)
White takes the opportunity to discard the ko fight in the upper left corner, and continues with the Main Semeai.

As a matter of course, she will also win the game by continuing with the ko fight, e.g. by giving atari at .

; :
Black is forced to capture two times in the corner, before he will be able to occupy White's liberty at .

Please note that - after White's peep at the upper edge and the connection of her single stone in the right centre - Black is unable to win the Central Semeai.

At the moment of White's decision point, Black's large group at the right will have only six liberties (), and so fall prey to the Punishment Semeai.

White will win the game by a large margin.

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

L e g a l   n o t i c e