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RTG Problem 4 Attempts
Keywords: Problem
BrianMarshall: Well, I guess I'll make an attempt.
To me,
After unkx80: Nice try! Unfortunately the correct result is not ko. =)
Another attempt resulting in ko:
White invades fiercely...
But after White 13, Black can again live by winning the ko. White 11 at 12, while tempting (to me, at least), is worse. Now an example of one failed attempt by White.
After
unkx80: This statement is somewhat inaccurate. Brian: Ah, I see. Thank you for the correction.
Now Black can easily get two eyes and live.
unkx80: If
Brian: Hmm. If
But when
White can just extend with Is this the correct answer this time?
unkx80: What if
Brian: If Bill: But then the result is seki.
The situation after In my mind, for Black to form an eye at z he needs to occupy one set of: a-b-c-d, a-b-c-e, a-b-d-e, or b-c-d-e. Alternately, Black could attempt to form an eye at d. This would require points c-z-e. Since, at best, Black requires three of six points, White can prevent this. unkx80: I admit that this problem is not so easy, and this isn't the Beginner Exercises series. I shall drop one hint: the main line to the solution involves shortage of liberties. Good effort there!
Dieter: I have a feeling this is coming pretty close. Just another minute ...
In a real game I would have gone for ko, I'm afraid.
unkx80: Bingo. =)
Thanks for the hint, unkx80, I had been under the illusion that Black could connect at This is a copy of the living page "RTG Problem 4 Attempts" at Sensei's Library. ![]() |