:: Igo Hatsuyôron 120 (2015)

The History of the Problem's Final Score

(1999 - 2011)

2002 - Confirming the Score

(Referenced by 764)


Unfortunately, neither Fujisawa Hideyuki nor Merlijn Kuin had shown the succeeding complete endgame on the left side of the board within their solutions. So, Joachim was forced to try on his own.

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We start with the partial sequence, Fujisawa Hideyuki had given for his Capture Variation.

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Fujisawa Hideyuki's sequence ends with this move. The endgame is said to continue with , .

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We continue with the endgame sequence on the left side (until ) that is used for the Semeai Variation of the goproblems.com's solution.

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Joachim found that White can successfully play this kikashi in the lower right, instead of closing her territory in the upper left with a move at first.

Black wins by three points.

This result is compatible to the statement of Fujisawa Hideyuki (two points for Black) under the assumption that he considered the 71st Black stone as additional prisoner for White.

However, Merlijn Kuin did not mention anything about a missing Black stone in his solution's commentary. So, perhaps he had another sequence in mind?

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It does not help Black to reduce White's territory on the upper edge.

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White captures Black's stone at the bottom, and each side continues with reducing the opponent's territory.

White lost four points of territory (173, 175, 176, ); Black lost three points of territory (174, ), and one stone (); so the score remains unchanged.

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If Black defends his territory at the bottom, White does so with on the upper edge.

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Black captures . Black has at least as many ko-threats as White (, , , ), so Black will win, and connect the ko.

Both sides lost one point of territory (, ), so the score remains unchanged again.

Copyright © 2020 Thomas Redecker.

Design by Jan van Rongen, modified by Thomas Redecker.

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