[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Paths
ProblemsOfTheDay

Referenced by
ProblemOfTheDay2

 

Problem Of The Day 2 Solution
Path: ProblemsOfTheDay   · Prev: ProblemOfTheDay2   · Next:
    Keywords: Problem

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

[Diagram]
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




Path: ProblemsOfTheDay   · Prev: ProblemOfTheDay2   · Next:
This is a copy of the living page "Problem Of The Day 2 Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.