tsumego #31

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cyclops
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tsumego #31

Post by cyclops »

Day #31 December 5th, Sinterklaas ( St Nicolas ) in Holland.
#31 a Advanced problem
Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|...,XO...
$$|.OOXXO...
$$|.XX..O...
$$|.OOOO....
$$|.........[/go]

#31b Intermediate problem
Click Here To Show Diagram Code
[go]$$Bc
$$-------
$$|..XOO.
$$|OX.XO.
$$|.X.XO.
$$|XX.OO.
$$|OOO...
$$|......[/go]

#31c Elementary problem
Click Here To Show Diagram Code
[go]$$Bc
$$-------
$$|.XXO..
$$|.OOOX.
$$|.OXXX.
$$|OOX,..
$$|XXX...
$$|......[/go]
Note: #29a turned out to be ko 5 yrs ago. Pls check for a better solution.

edit: logan states there should have been a b connection stone at B11 in #31a. Lets adopt his knowledge.
Last edited by cyclops on Wed Dec 05, 2012 4:37 am, edited 3 times in total.
Josh Hatch
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Re: tsumego #31

Post by Josh Hatch »

I haven't found an answer for the advanced problem yet.
#31 a Advanced problem
Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|....XO...
$$|.OOXXO...
$$|.XX..O...
$$|.OOOO....
$$|.........[/go]

#31b Intermediate problem
Click Here To Show Diagram Code
[go]$$Bc
$$-------
$$|..XOO.
$$|OX.XO.
$$|1X.XO.
$$|XX.OO.
$$|OOO...
$$|......[/go]

#31c Elementary problem
Click Here To Show Diagram Code
[go]$$Bc b3 to the right of 2
$$-------
$$|2XXO..
$$|1OOOX.
$$|.OXXX.
$$|OOX,..
$$|XXX...
$$|......[/go]
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Re: tsumego #31

Post by illluck »

Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.21,XO...
$$|5OOXXO...
$$|4XX3.O...
$$|.OOOO....
$$|.........[/go]


Edit: Wait, no, white plays 4 at 5...
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Unusedname
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Re: tsumego #31

Post by Unusedname »

31a

Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.412XO...
$$|3OOXXO...
$$|.XX5.O...
$$|.OOOO....
$$|.........[/go]


Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.214XO...
$$|3OOXXO...
$$|.XX5.O...
$$|.OOOO....
$$|.........[/go]


If i count correctly black wins the race white needs 3 moves
black needs 2 moves

Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.315XO...
$$|4OOXXO...
$$|2XX..O...
$$|.OOOO....
$$|.........[/go]


Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|531,XO...
$$|.OOXXO...
$$|2XX4.O...
$$|.OOOO....
$$|.........[/go]
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Re: tsumego #31

Post by Jedo »

Unusedname wrote:31a

Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.214XO...
$$|3OOXXO...
$$|.XX5.O...
$$|.OOOO....
$$|.........[/go]


but what about
Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.21,XO...
$$|3OOXXO...
$$|.XX4.O...
$$|.OOOO....
$$|.........[/go]
"There are no limits. There are plateaus, but you must not stay there, you must go beyond them. If it kills you, it kills you. A man must constantly exceed his level." -- Bruce Lee
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Re: tsumego #31

Post by speedchase »

Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. 4 3 , X O . . .
$$|5 O O X X O . . .
$$|2 X X 1 . O . . .
$$|. O O O O . . .
$$|. . . . . . . . .[/go]

edit: nevermind:
Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. . 3 , X O . . .
$$|4 O O X X O . . .
$$|2 X X 1 . O . . .
$$|. O O O O . . .
$$|. . . . . . . . .[/go]
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Re: tsumego #31

Post by Unusedname »

Jedo wrote:
Unusedname wrote:31a

Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.214XO...
$$|3OOXXO...
$$|.XX5.O...
$$|.OOOO....
$$|.........[/go]


but what about
Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.21,XO...
$$|3OOXXO...
$$|.XX4.O...
$$|.OOOO....
$$|.........[/go]


Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|.O.XO....
$$|XXXXXO.O.
$$|OOOOXO...
$$|.21,XO...
$$|4OOXXO...
$$|.XX3.O...
$$|.OOOO....
$$|.........[/go]


hmm i got nothing

ok redo
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Re: tsumego #31

Post by logan »

Cho Chikun L&D 3-Vol. series have many wrong problems. 31a is like this is most books:

Click Here To Show Diagram Code
[go]$$Bc Normal Problem
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. . . , X O . . .
$$|. O O X X O . . .
$$|. X X . . O . . .
$$|. O O O O . . . .
$$|. . . . . . . . .
$$|. X X . X . . . .
$$|. . . . . . . . .[/go]

But in Cho Chikun book it's missing these stones:
Click Here To Show Diagram Code
[go]$$Bc Cho Chikun
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. . . , X O . . .
$$|. O O X X O . . .
$$|. X X . . O . . .
$$|. O O O O . . . .
$$|. . . . . . . . .
$$|. Y Y . Y . . . .
$$|. . . . . . . . .[/go]

Therefore, this normal solution does not work:
Click Here To Show Diagram Code
[go]$$Bc
$$----------
$$|. O . X O . . . .
$$|X X X X X O . O .
$$|O O O O X O . . .
$$|. 2 1 6 X O . . .
$$|4 O O X X O . . .
$$|5 X X 3 . O . . .
$$|7 O O O O . . . .
$$|. . . . . . . . .
$$|. a . . . . . . .
$$|. . . . . . . . .[/go]

Because there is no stone to connect at A. Maybe there is different solution, but I cannot find it.

As for other problems:
#31b Intermediate problem
Click Here To Show Diagram Code
[go]$$Bc
$$-------
$$|b.XOO.
$$|OX3XO.
$$|1X2XO.
$$|XXaOO.
$$|OOO...
$$|......[/go]

#31c Elementary problem
Click Here To Show Diagram Code
[go]$$Bc :b3: @ :bt:
$$-------
$$|2YXO..
$$|1OOOX.
$$|.OXXX.
$$|OOX,..
$$|XXX...
$$|......[/go]
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Re: tsumego #31

Post by illluck »

Many thanks to Logan for stopping me from spending more futile effort on 31a - I suspected that's what it was but was trying to find an order that somehow worked :p
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Re: tsumego #31

Post by Jedo »

Haha wow I wasted so much time trying to find an order that worked.
"There are no limits. There are plateaus, but you must not stay there, you must go beyond them. If it kills you, it kills you. A man must constantly exceed his level." -- Bruce Lee
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