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OngoingGame

 

Ongoing Game One Upper Right Yose
   

[Diagram]
Diag.: Upper right yose. Starting position.


This position seems to be a kingdom of gote. The only interesting point about it is a possibility of seki. What is the best sequence? Should white choose 'a' over 'b'?


BillSpight:

This is a 1 1/3 point gote (MiaiCounting).

[Diagram]
Diag.: White plays first.

Now Black has a 1 point sente.


[Diagram]
Diag.: Black sente follow-up.

Let's count this as -5 (5 points for White in the corner).


[Diagram]
Diag.: Black plays first.

Here Black also has a 1 point sente.


[Diagram]
Diag.: Black sente follow-up (2).

(B 9 - W 10 exchange made for clarity.)

White has the same 5 points in the corner, but Black has 2 more points (marked) on the side plus 1 captured White stone (marked). White can count 1/3 of Black's stone in ko (B 9). So the count is -2 1/3.

The sente plays do not change the count, so Black plays to a position worth -2 1/3 with gote while White plays to a position worth -5 with gote. The original position has a count of -3 2/3, and the miai value of a play is 1 1/3.





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