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9p Life & Death Tsumego
http://www.lifein19x19.com/viewtopic.php?f=10&t=9533
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Author:  Subotai [ Thu Dec 12, 2013 1:04 pm ]
Post subject:  9p Life & Death Tsumego



Use aji to make black live locally in the top right (r12) destroying your opponent's hopes and dreams, forcing them to resign.

Afterwards, awe in the greatness that is Yi Ch'ang-ho

Answer in the spoiler, have fun!



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9p prob.sgf [641 Bytes]
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Author:  DrStraw [ Thu Dec 12, 2013 1:24 pm ]
Post subject:  Re: 9p Life & Death Tsmuego

Well, I wouldn't exactly call it a 9p problem. I reckon any strong amateur could find it.

Author:  Subotai [ Thu Dec 12, 2013 2:14 pm ]
Post subject:  Re: 9p Life & Death Tsmuego

There is no doubt aji there and I am not a strong amateur myself but the fact that Yi read through all of that and completely rearranged the position of the game in the way he did I find it amazing.

His opponent, Yu Ch'ang-hyeok also a 9p, is no push over and I seriously doubt that a strong amateur could have seen through all of that and done what Yi did.

Author:  mitsun [ Thu Dec 12, 2013 6:31 pm ]
Post subject:  Re: 9p Life & Death Tsmuego

I rejected the game move because I assumed that W would consider cutting too dangerous and would just block and connect underneath :) What does B have if W declines the challenge?

Maybe a better problem is this: after the b hane, can W safely cut and capture? We have evidence that this qualifies as a 9p problem.

Author:  illluck [ Thu Dec 12, 2013 6:40 pm ]
Post subject:  Re: 9p Life & Death Tsmuego

Agree with mitsun. I wonder, though, could it be that white chose the move that didn't work because the connection doesn't give him enough to win? The difficulty with the original situation would then lie more in positional judgement rather than reading.

Author:  Eizero [ Thu Dec 12, 2013 7:27 pm ]
Post subject:  Re: 9p Life & Death Tsumego



Above is my guesses, I could be completely wrong. xD

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