Life In 19x19 :: tsumego #31

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tsumego #31 http://www.lifein19x19.com/viewtopic.php?f=15&t=7360	Page 1 of 1

Author:	cyclops [ Tue Dec 04, 2012 6:28 pm ]
Post subject:	tsumego #31
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.

Author:	Josh Hatch [ Tue Dec 04, 2012 7:58 pm ]
Post subject:	Re: tsumego #31
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]`

Author:	illluck [ Tue Dec 04, 2012 8:28 pm ]
Post subject:	Re: tsumego #31
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...

Author:	Unusedname [ Tue Dec 04, 2012 9:06 pm ]
Post subject:	Re: tsumego #31
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]`

Author:	Jedo [ Tue Dec 04, 2012 9:30 pm ]
Post subject:	Re: tsumego #31
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]`

Author:	speedchase [ Tue Dec 04, 2012 9:55 pm ]
Post subject:	Re: tsumego #31
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]`

Author:	Unusedname [ Tue Dec 04, 2012 10:23 pm ]
Post subject:	Re: tsumego #31
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

Author: logan [ Wed Dec 05, 2012 12:15 am ]

Post subject: Re: tsumego #31

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:

Author:	illluck [ Wed Dec 05, 2012 9:34 am ]
Post subject:	Re: tsumego #31
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

Author:	Jedo [ Wed Dec 05, 2012 1:53 pm ]
Post subject:	Re: tsumego #31
Haha wow I wasted so much time trying to find an order that worked.

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