OD1P - May 23 Problem / Solution

Sub-page of OD1PMay23Problem

Problem of the Day 2 Solution Discussion

Post your solution here!


Failure 1 (Dead)

[Diagram]

Failure 1 (Dead)

Black dies.


Failure 2 (Ko - Black can do better)

[Diagram]

Failure 2 (Ko)

B7 takes at BC. Next:

[Diagram]

Failure 2 (continued)

W1 takes back, and after B2 and W3 a ko fight ensues. Black can do better than that.


[Diagram]

How about?

B7 takes at BC, W8 at 2.
Bill: The writer was under the misapprehension that B7 could be played at 2. The corrected sequence shows that Black dies.

[Diagram]

Or? (4 at 2, 7 at WC)


[Diagram]

Or? (Corrected.)

W4 fills at BC.
Bill: Through B7 Black lives, but W4 is an error.


Attempt 3

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Atari

Bill: B1 looks OK.
Then W2 - B7 is sente.
In a real game, I think that the ko (Failure 2) is often better than giving up so much for small life. :-)

[Diagram]

Double ko

Here is a variation I like. Black is alive in double ko.


B1 was a real blind spot for me. I had then expected W2 here, and Black still lives.

[Diagram]

Solution 3



This is a copy of the living page "OD1P - May 23 Problem / Solution" at Sensei's Library.
(OC) 2005 the Authors, published under the OpenContent License V1.0.
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