cyclops wrote:
correct?
White will connect with
at 
, thereafter capture the Ko in the corner first.But because this is an endgame problem, Ko is no option for White anyway.
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| Author: | cyclops [ Mon Aug 30, 2010 5:02 pm ] |
| Post subject: | Tsumego from Breakthrough prob 1 |
I'm reading "The breakthrough to Shodan". Not that I have any hopes. I'm not sure about the first problem in Ch 9. The question is: what is B's best endgame move. The wrong answer is here: The right answer is: My guess: correct? |
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| Author: | Cassandra [ Tue Sep 07, 2010 10:06 am ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
cyclops wrote: correct? White will connect with at , thereafter capture the Ko in the corner first.But because this is an endgame problem, Ko is no option for White anyway. |
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| Author: | zinger [ Tue Sep 07, 2010 1:39 pm ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
What about  at ?
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| Author: | Cassandra [ Wed Sep 08, 2010 9:45 am ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
zinger wrote: What about at ?Ends in Ko also. |
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| Author: | cyclops [ Mon Sep 27, 2010 5:52 am ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
It took me some time to digest. But here is what I learnt: The solutions of the book, of Cassandra and of zinger all leads to ko with Black capturing first. They are all three ( equally) good refutations for W's blocking move @2. W shouldn't risk ko for some yosepoints. book's refutation: Cassandra: Zinger: |
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| Author: | ethanb [ Mon Sep 27, 2010 7:08 am ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
cyclops wrote: It took me some time to digest. But here is what I learnt: The solutions of the book, of Cassandra and of zinger all leads to ko with Black capturing first. They are all three ( equally) good refutations for W's blocking move @2. W shouldn't risk ko for some yosepoints. book's refutation: Cassandra: Zinger: One of these things is not like the other... |
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| Author: | zinger [ Mon Sep 27, 2010 10:37 am ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
Quote: One of these things is not like the other... True enough. But what I meant was: |
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| Author: | ethanb [ Mon Sep 27, 2010 11:44 am ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
zinger wrote: Quote: One of these things is not like the other... True enough. But what I meant was: That's why I put your name in quotes instead of just saying "Zinger's diagram." He had it labeled as yours but it wasn't. 
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| Author: | cyclops [ Mon Sep 27, 2010 4:38 pm ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
He (cyclops) apologizes for misusing Zingers name. Don't know how he got so confused. But then his (Z's) true move (B5 ) is suboptimal because W gets to make the first ko capture. Or maybe cyclops is myopic beyond repair? BTW, the initial position is discussed also in "Basic Techniques of Go" by Haruyama & Nagahara ( Ch 5, dia 43, p 101 ). |
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| Author: | ethanb [ Mon Sep 27, 2010 7:18 pm ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
cyclops wrote: He (cyclops) apologizes for misusing Zingers name. Don't know how he got so confused. But then his (Z's) true move (B5 ) is suboptimal because W gets to make the first ko capture. Or maybe cyclops is myopic beyond repair? BTW, the initial position is discussed also in "Basic Techniques of Go" by Haruyama & Nagahara ( Ch 5, dia 43, p 101 ). Haha, sorry - ethanb has a hard time judging what's polite in terms of pronouns in a forum like this. Better to use names. But 9 can be a hane on the outside, then white will have to throw in to start the ko (so black captures first anyway, as well as making it a direct ko rather than approach-move.) |
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| Author: | cyclops [ Tue Sep 28, 2010 5:27 pm ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
ethanb wrote: Haha, sorry - ethanb has a hard time judging what's polite in terms of pronouns in a forum like this. Better to use names. But 9 can be a hane on the outside, then white will have to throw in to start the ko (so black captures first anyway, as well as making it a direct ko rather than approach-move.) No need to say sorry; Cyclops was not offended. I am confused about your last remark. W8 is an atari and B has no choice but to play in the very corner. Or do we talk different diagrams? |
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| Author: | ethanb [ Tue Sep 28, 2010 9:32 pm ] |
| Post subject: | Re: Tsumego from Breakthrough prob 1 |
cyclops wrote: ethanb wrote: Haha, sorry - ethanb has a hard time judging what's polite in terms of pronouns in a forum like this. Better to use names. But 9 can be a hane on the outside, then white will have to throw in to start the ko (so black captures first anyway, as well as making it a direct ko rather than approach-move.) No need to say sorry; Cyclops was not offended. I am confused about your last remark. W8 is an atari and B has no choice but to play in the very corner. Or do we talk different diagrams? We talk late in the evening, I think - I forgot that a marked a stone earlier.
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