Yose from Games 5 / Solution

Sub-page of YoseFromGames5
[Diagram]

Black plays first

B1 removes the main aji in the corner.
Later, W4 - B5 is sente.
The result is +9 (for Black).

[Diagram]

White plays first

B8 fills at WC.
There is no unique solution, but I think that W1 is psychologically best. B2 is not that obvious.
Next, W3 - B8 takes kikashi in the corner.

[Diagram]

White plays first (ii)

Now, B1 is tesuji, preventing ko or seki and allowing B3.[1]

[Diagram]

White plays first (iii)

Later, W1 - B2 is sente.

The result is +4.

So this is White's 5-point sente.

In the game, both players overlooked it.

--Bill Spight


[1]

[Diagram]

Ko or seki

B5 takes at BC.
If B1 hanes, B3 should normally be at a. W4 is immune to immediate capture, because of snapback.

[Diagram]

Ko or seki (ii)

Now Black can make a seki at a or make a picnic ko for White at b.

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This is a copy of the living page "Yose from Games 5 / Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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