Life In 19x19
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1001 problems, nr 775
http://prod.lifein19x19.com/viewtopic.php?f=15&t=894
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Author:  entropi [ Fri Jun 18, 2010 2:24 am ]
Post subject:  1001 problems, nr 775

Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . O . . . . . . . .
$$ | . O . O O . . . . .
$$ | . X X X O . . . . .
$$ | X X O . O . . . . .
$$ | X O . . X O . . . .
$$ | X O . . X O . . . .
$$ | ------------------+
black to live (unconditionally)[/go]


Solution given in the book:
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . O . . . . . . . .
$$ | . O . O O . . . . .
$$ | . X X X O . . . . .
$$ | X X O 1 O . . . . .
$$ | X O 2 5 X O . . . .
$$ | X O 3 4 X O . . . .
$$ | ------------------+[/go]


My question:
No question! I was missing something obvious :oops:

Author:  tj86430 [ Fri Jun 18, 2010 2:28 am ]
Post subject:  Re: 1001 problems, nr 775

entropi wrote:
Click Here To Show Diagram Code
[go][go]$$Bc
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . O . . . . . . . .
$$ | . O . O O . . . . .
$$ | . X X X O . . . . .
$$ | X X O 1 O . . . . .
$$ | X O 3 4 X O . . . .
$$ | X O 2 . X O . . . .
$$ | ------------------+[/go]

dead?

What am I missing?

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


results in:
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . O . . . . . . . .
$$ | . O . O O . . . . .
$$ | . X X X O . . . . .
$$ | X X . X O . . . . .
$$ | X . X . X O . . . .
$$ | X . . X X O . . . .
$$ | ------------------+[/go]

Author:  entropi [ Fri Jun 18, 2010 2:32 am ]
Post subject:  Re: 1001 problems, nr 775

:lol:

Ok too earlky in the morning, I should permanently delete this thread

Author:  topazg [ Fri Jun 18, 2010 5:33 am ]
Post subject:  Re: 1001 problems, nr 775

Quote:
results in:

Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . O . . . . . . . .
$$ | . O . O O . . . . .
$$ | . X X X O . . . . .
$$ | X X O X O . . . . .
$$ | X O . O X O . . . .
$$ | X O O 5 X O . . . .
$$ | ------------------+[/go]


Not really, this is a self atari by Black!

The fact Black can't play it means White kills, so it's not so good for Black really :D

Author:  Magicwand [ Fri Jun 18, 2010 5:58 am ]
Post subject:  Re: 1001 problems, nr 775

topazg wrote:
Quote:
results in:

Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . O . . . . . . . .
$$ | . O . O O . . . . .
$$ | . X X X O . . . . .
$$ | X X O X O . . . . .
$$ | X O . O X O . . . .
$$ | X O O 5 X O . . . .
$$ | ------------------+[/go]


Not really, this is a self atari by Black!

The fact Black can't play it means White kills, so it's not so good for Black really :D

i think you missed something on the picture.. :)

Author:  topazg [ Fri Jun 18, 2010 6:03 am ]
Post subject:  Re: 1001 problems, nr 775

Hahaha, aren't diagrams where the stones get removed amusing :D

Author:  entropi [ Fri Jun 18, 2010 6:23 am ]
Post subject:  Re: 1001 problems, nr 775

topazg wrote:
Hahaha, aren't diagrams where the stones get removed amusing :D


That was exactly the thing I overlooked :)
Luckily it was just a problem, overlooking such a thing in a game would be really frustrating :)

Author:  topazg [ Fri Jun 18, 2010 7:27 am ]
Post subject:  Re: 1001 problems, nr 775

That was a really interesting blindspot with diagrams for me actually. The second I saw your 4 I assumed it captured 3, because else why would you play it? Actually going through the numbers sequentially didn't happen until I re-read magicwand's post :)

Author:  entropi [ Fri Jun 18, 2010 7:52 am ]
Post subject:  Re: 1001 problems, nr 775

topazg wrote:
...because else why would you play it? ...


For a good reason: Being waken up at 6am by my daughter dancing on my head :)

Author:  cyclops [ Fri Jun 18, 2010 4:46 pm ]
Post subject:  Re: 1001 problems, nr 775

Happily I started reading this thread. I solved the problem looking forward to the hidden parts. Only to find out there was no problem. Maybe you should edit the unhidden part of your first post just to mention that you withdraw your problem. Actually this is also a lesson for me to learn because I also too often started a new thread based on some stupid error. No way to withdraw a thread, or is there?

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