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 Post subject: Two 'intermediate' tsumego #1 Posted: Fri May 04, 2012 1:07 am
 Beginner

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Hey guys, Im working through Cho Chikun's Encyclopaedia of life and death (without the answers) and I cant find the solution to intermediate problem 62 and 71.
Status problems black to play.

`[go]\$\$B Problem 62\$\$ ------------------\$\$ | . . . . . . . . .\$\$ | . X X . X . . . .\$\$ | . O X O X . . O .\$\$ | . O O , O O . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

And
`[go]\$\$B Problem 71\$\$ ------------------\$\$ | . . . . . O . . .\$\$ | X X . X X O . . .\$\$ | . . X O O O . . .\$\$ | . O O , . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

I have spent quite a while on these problem but no matter what I try black always dies. Any ideas?

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 Post subject: Re: Two 'intermediate' tsumego #2 Posted: Fri May 04, 2012 2:18 am
 Lives in gote

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`[go]\$\$B Problem 71\$\$ ------------------\$\$ | . 3 2 5 1 O . . .\$\$ | X X 4 X X O . . .\$\$ | . . X O O O . . .\$\$ | . O O , . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

`[go]\$\$B Problem 71\$\$ ------------------\$\$ | . X 8 X X O . . .\$\$ | X X 6 X X O . . .\$\$ | . 7 X O O O . . .\$\$ | . O O , . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

`[go]\$\$B Problem 71\$\$ ------------------\$\$ | . X O . . O . . .\$\$ | X X O 9 . O . . .\$\$ | . X X O O O . . .\$\$ | . O O , . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

_________________

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 Post subject: Re: Two 'intermediate' tsumego #3 Posted: Fri May 04, 2012 5:50 am
 Gosei

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The setup for problem 62 is wrong. Here's the correct setup:

`[go]\$\$B Problem 62\$\$ ------------------\$\$ | . . . . . . . . .\$\$ | . X X . X X X O .\$\$ | . O X O X O O O .\$\$ | . O O , O . . . .\$\$ | . . . . O . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

http://tsumego.tasuki.org/cho-2-intermediate.pdf

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 Post subject: Re: Two 'intermediate' tsumego #4 Posted: Fri May 04, 2012 6:29 am
 Lives in sente

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Universal go server handle: speedchase
`[go]\$\$B Problem 62\$\$ ------------------\$\$ | . . . 1 . . . . .\$\$ | . X X . X X X O .\$\$ | . O X O X O O O .\$\$ | . O O , O . . . .\$\$ | . . . . O . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

Dusk eagle, doesn't this work?

`[go]\$\$B Problem 62\$\$ ------------------\$\$ | . . . . . . . . .\$\$ | 2 X X . X . 1 3 .\$\$ | . O X O X . . O .\$\$ | . O O , O O . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

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 Post subject: Re: Two 'intermediate' tsumego #5 Posted: Fri May 04, 2012 7:24 am
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Thanks a lot stalkor I missed move now that I see it I really like the problem. Sorry dusk I mislabled the problem its problem 63.

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 Post subject: Re: Two 'intermediate' tsumego #6 Posted: Fri May 04, 2012 7:31 am
 Gosei

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Yeah, that appears to be the solution to number 63. I couldn't find it at first, and I just thought it was set up wrong. Gah, my tsumego skills are so out of shape.

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 Post subject: Re: Two 'intermediate' tsumego #7 Posted: Fri May 04, 2012 8:24 am
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Hey guys i just cant seem to find the solution after

`[go]\$\$B Problem 62\$\$ ------------------\$\$ | . . . . . . . . .\$\$ | . X X . X . 1 . .\$\$ | . O X O X 2 . O .\$\$ | . O O , O O . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

For me the right side always becomes a false eye

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 Post subject: Re: Two 'intermediate' tsumego #8 Posted: Fri May 04, 2012 8:55 am
 Lives in sente

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`[go]\$\$B Problem \$\$ ------------------\$\$ | . . . a . . . . .\$\$ | . X X . X 3 1 , .\$\$ | . O X O X 2 . O .\$\$ | . O O . O O . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

black can live with a, and there really isn't a way for white to get rid of that in sente, so black can probably escape along the bottom, i think...

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 Post subject: Re: Two 'intermediate' tsumego #9 Posted: Fri May 04, 2012 9:13 am
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Thanks a lot didnt think of (a) which is bizarre as the problem before this one (which is shown above) is almost exactly the same and I found that answer right before attempting this one.

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 Post subject: Re: Two 'intermediate' tsumego #10 Posted: Fri May 04, 2012 3:08 pm
 Lives in gote

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speedchase wrote:
`[go]\$\$B Problem \$\$ ------------------\$\$ | . . . a . . . . .\$\$ | . X X . X 3 1 , .\$\$ | . O X O X 2 . O .\$\$ | . O O . O O . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .\$\$ | . . . . . . . . .[/go]`

black can live with a, and there really isn't a way for white to get rid of that in sente, so black can probably escape along the bottom, i think...

Some continuation:
`[go]\$\$Wc\$\$ +-----------------------\$\$ | . . . 2 . . . . . . . \$\$ | 8 X X 1 X B X 4 6 . . \$\$ | . O X O X O a O 5 7 . \$\$ | . O O 3 O O . . . , . \$\$ | . . . . . . . . . . .[/go]`

At 7 w cannot hane because of his weakness at a. So 7 & 8 are black's miai for life or escape, I think...
Any local solution?

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