:: Igo Hatsuyôron 120 (2021)

Variations of Our Solution (IIIb)

Tricking KataGo (Triple-Ko)

VAR (C) (A) (.2) (.1)

: ( 222gh)
Black plays the diagonal move at the top, attempting to erase his weaknesses in that area.

:
White captures Black's single stone at the bottom, in sente.

:
KataGo (2020) seems to like this kikashi in the lower left corner, as it is favoured quite often.

:
White plays KataGo's bad-shape move in the left centre.

:
Black inserts a kikashi of his own.

:
Black plays KataGo's sold connection.

:
There is no need for White to try too hard here.
She simply connects at the outside, forcing Black to play a defensive move inside his corner.

: (117 222ii)
Black's passive defense inside his corner simplifies the matter.

Black might consider connecting at immediately. This will cause some exchanges in the upper left corner (more or less complicated), but the final scores of the game will not be affected.

:
White connects her single stone in the right centre.

:
Black pushes once at the top, ...

:
... before continuing with the Main Semeai.

Black plays 2/2 reductions.

Capture Variation:

Compared to the superordinate variation ...

  • Black's cumulated gain in the upper left corner is one point.
  • White captured Black's stone in the lower left, so gaining two points.
  • At the top, one point of White's territory changed place, so the net effect is zero.

In total, Black lost one point.

White + 1 => White + 2

Semeai Variation:

Compared to the superordinate variation ...

  • Black's cumulated gain in the upper left corner is one point.
  • White captured Black's stone in the lower left, so gaining two points.
  • At the top, one point of White's territory changed place, so the net effect is zero.
  • Black captured one White stone less at the left, so losing two points.

In total, Black lost three points.

Black + 5 => Black + 2

Copyright © 2021 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

L e g a l   n o t i c e