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problem 46 (1000+1 l&d problems)
http://www.lifein19x19.com/viewtopic.php?f=11&t=4579
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Author:  johanesek [ Fri Sep 02, 2011 12:20 am ]
Post subject:  problem 46 (1000+1 l&d problems)

Click Here To Show Diagram Code
[go]$$c Black to live
$$ -----------------------------
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | O O O O O O . . . . . . . |
$$ | O X X . X O . . . . . . . |
$$ | X . 1 . X O . . . . . . . |
$$ | . . . O X O . . . . . . . |
$$ ----------------------------[/go]


Given answer: After Black 1, White can't stop him from making to eyes.


But what if:

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


Isn't this a seki?


EDIT:
nevermind i got it now:

Click Here To Show Diagram Code
[go]$$c
$$ -----------------------------
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | O O O O O O . . . . . . . |
$$ | O X X . X O . . . . . . . |
$$ | X . 1 . X O . . . . . . . |
$$ | . 2 3 O X O . . . . . . . |
$$ ----------------------------[/go]

Author:  gaius [ Fri Sep 02, 2011 1:41 am ]
Post subject:  Re: problem 46 (1000+1 l&d problems)

Your edit is correct :)

But anyway, living in seki is also a form of living. So if the problem is "black to live" then the seki would be sufficient.

Author:  johanesek [ Fri Sep 02, 2011 2:01 am ]
Post subject:  Re: problem 46 (1000+1 l&d problems)

gaius wrote:
Your edit is correct :)

But anyway, living in seki is also a form of living. So if the problem is "black to live" then the seki would be sufficient.

Yes, but i was confused with "After Black 1, White can't stop him from making to eyes", because seki is no eyes. But now i know :).

Author:  Dusk Eagle [ Fri Sep 02, 2011 6:04 am ]
Post subject:  Re: problem 46 (1000+1 l&d problems)

If black plays :b3: below, white can actually kill. Do you see how?

Click Here To Show Diagram Code
[go]$$c
$$ -----------------------------
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | O O O O O O . . . . . . . |
$$ | O X X . X O . . . . . . . |
$$ | X 3 1 . X O . . . . . . . |
$$ | . 2 . O X O . . . . . . . |
$$ ----------------------------[/go]

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

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