:: Igo Hatsuyôron 120 (2017)

Variations of the Professional Solution

VARP (.1)

(Referenced by 1092p)


: ( 730a)
Black plays tenuki in the upper left corner.
Here, we have chosen to play the Hasami-Tsuke Sequence first.

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Finally, Black occupies the guzumi point.

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White attacks Black's upper left corner, hoping for a territorial gain there that could compensate for Black's profits when living with his large group in the upper right.

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Black starts the sequence that ensures him of two eyes.

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White further reduces Black's upper left corner.

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It follows an amateurish idea of the ensuing endgame.

White starts with her large sente moves at the left.

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Black does not connect at in the lower left corner, but switches to the large gote move in the upper right corner.

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White captures Black's single stone.

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This move puts White's upper group at the left side in atari, so she has to capture the nakade with .

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Black ended in gote at the left, so White can continue the endgame in the upper right.

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This forcing move is inserted, in order to clarify the board position for the following comparison.

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For comparison, we use the subvariation after Black played the kikashi of Michael Redmond, and Black lived in the top right ( 738e).

The comparison of the final positions in the left half of the board (kikashi variation at the left) shows:

  • White did not capture Black's atari-stone at the top, so losing one point of territory ().
  • White captured one stone less at the top, so losing two points of territory ().
  • White gained three points of territory at the top ().
  • Black lost one point of territory in the lower left corner ().
  • White captures Black's single stone at the bottom, so gaining two points of territory ().

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

  • Black did not capture two White stones, so losing four points of territory ().
  • Black lost two points of territory ().
  • White lost six points of territory in the top right corner ().

In total, White gained three points, compared to the referenced kikashi-variation. That variation resulted in a Black win by two points, so ...

White wins by one point.

Copyright © 2020 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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