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Picky Endgame / Solution
Sub-page of PickyEndgame
The atari at Of course, now we have the question of how we derived the value of 4.0375.
If White plays first we have a position with a count of 1.075.
If Black plays at How do we get the count of 1.075?
After
After
After The average count is - 1.85.
After
The count of the next position is -0.2 (counting the captured Black stone).
The local score is -3. White has made 2 net plays to get here.
The local score is +4. Black has made 3 net plays to get here. The difference in score between these positions is 7 points. The difference in plays is 5 plays. The miai value of each play is 7/5 = 1.4 points. So the initial position in the ko has a count of 4 - 3 * 1.4 = -3 + 2 * 1.4 = -0.2.
DiscussionKarl Knechtel: b was also proposed in the problem statement; what is the miai value here? Also, what situations would make the sagari correct? (I assume they have to do with the ko threat environment?)
Bill: The sagari may be better if this ko is unfavorable for Black.
The atari at This is a copy of the living page "Picky Endgame / Solution" at Sensei's Library. ![]() |