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BeginnersEndgameE...

 

BeginnersEndgameExercise4/Solution
Sub-page of BeginnersEndgameExercise4

[Diagram]
White to play and win

Komi = 5.5

Black has 5 points of territory in the top right, 2 points in the middle, 2 points in the bottom right, 3 points on the bottom side, and 7 points on the left side, for a total of 19 points.

White has 6 points in the bottom left and 8 points elsewhere for 14 points of territory. Adding komi of 5.5 brings the total to 19.5 points.

White wins by 0.5.

All White has to do is make the largest play.

The hane-tsugi, W1 - W3, is a gote worth 1 point miai. Then B4 - W5 is a 1 point sente. Next B6 is worth 0.75. Finally, W7 is worth 0.5.

White could also win with the reverse sente, W4.

Below I derive these values.



[Diagram]
0.5 point gote

B1 makes 1 point in the top left corner.

W1 would prevent Black from making that point.

The local count there is +0.5 (scores are given from Black's point of view). B1 gains 0.5 to make 1 point; W1 would gain 0.5 to make 0. The miai value of a play is thus 0.5.

{More to come} -- Bill



This is a copy of the living page "BeginnersEndgameExercise4/Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.