:: Igo Hatsuyôron 120 (2017)

Variations of the Professional Solution

VARP (.2)

: ( 730f)
Black continues with the endgame in the upper left corner.

:
Black connects.

Black must not live in the upper right, instead.
in response seems to be to large and might end in a White win by a small margin.

The exchange of , will be played later in the endgame.

(Referenced by 730a)


:
White prevents the Hasami-Tsuke Sequence – and so the kikashi of Michael Redmond – but loses some points of territory.
This move loses a liberty in the Main Semeai, so ...

:
...Black is able to play the push once to the right, losing this liberty, but destroying one point of White territory.

If the Hasami-Tsuke Sequence was played before the endgame on the left side of the board has started, Black would use his free move to defend his territory in the top left corner, so winning the game.

:
Black has twelve liberties in the top right (), as many as "usual" after the reduction of White's corner.

///

:
After the dissolving of the hanezeki, White will get sente to secure her point of territory in the centre.

The comparison of the final positions in the left half of the board (Professional Solution at the left) shows:

  • Black lost one point of territory in the upper left corner ().

The comparison of the final positions in the right half of the board (Professional Solution at the left) shows:

  • White lost two points of territory () in the upper right corner.
  • White got the point of territory in the centre ().

In total, gains and losses compensate for each other.

The game ends in a draw (jigo).

Copyright © 2020 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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