Another problem from a game.

Click Here To Show Diagram Code

[go]$$W
$$ | . . . . . . . .
$$ | . O . . . . . .
$$ | . . . . . . . .
$$ | . O O O O . . .
$$ | . X X . . O . .
$$ | . . . X . O . .
$$ | . 1 . . . O . .
$$ | . . X . . O . .
$$ | . . X . O . . .
$$ | . X . O . . . .
$$ | . O O . . . . .
$$ | . . . . . . . .
$$ | . O . . . . . .
$$ | . . . . . . . .[/go]

It looks alive to me.

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You mean like this?

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just a guess


edit: so it seems I guessed 6 out of 9

.... Keep going.

I've done the essential part. The rest is just judicious application of miai.

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You think Black has miai to live? I don't think so. I'll add a few more moves:

No one is posting, I'll add a few more moves. Maybe I'm about to discover something obvious that I hadn't seen before?

Aha illluck, I didn't see that. But I think White can use a different move order. The problem is getting more and more variations so I'm switching to sgf:

You have the 5(a)-8(b)-10(b) variation ending in death, but you neglect at d13, which is ko.

On 5(a)-8(b)-10(c), you have filling in a shared liberty at A10, but if B takes an external liberty first, W has no move.

On 5(a)-8(a)-12(c), can fill the ko, and W has no move.

Thanks jts. I fixed the problems you pointed out. To fix the 3rd problem you pointed out, I had to add an extra white stone to the problem (oops!). Any more mistakes?

Click Here To Show Diagram Code

[go]$$Bc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . W . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O O O O . . . . . . . . . . . . . . |
$$ | . X X . . O . . . . . . . . . . . . . |
$$ | 3 X . X . O . . . . . . . . . . . . . |
$$ | O O O X . O . . . . . . . . . . . . . |
$$ | q X X 2 . O . . . , . . . . . , . . . |
$$ | X . X . O . . . . . . . . . . . . . . |
$$ | O X 1 O . . . . . . . . . . . . . . . |
$$ | O O O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Dear all, in above variation, Black takes of course a liberty with from the other side
(the one with more libs), then would win the semeai.

i thought however of another sequence, which sprang to mind:

Click Here To Show Diagram Code

[go]$$Bc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . W . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | 5 O O O O . . . . . . . . . . . . . . |
$$ | a X X 6 . O . . . . . . . . . . . . . |
$$ | 3 4 7 X . O . . . . . . . . . . . . . |
$$ | . O . 1 . O . . . . . . . . . . . . . |
$$ | . r X , . O . . . , . . . . . , . . . |
$$ | 9 . X . O . . . . . . . . . . . . . . |
$$ | 8 X p O . . . . . . . . . . . . . . . |
$$ | q O O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . W . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

attempts to enlarge the eye-space, = A and try to do the opposite.
Black is dead after W10 = P., because Q and R are miai.

Note the usefulness of both white ,
does this exact position really come from a game record?

_________________
Greetings,
Tommie

3dan EGF (AGA no 13477) || Tommie on KGS: 'June'|| DGS: 'Zhi Laohu' 纸老虎 = 'paper tiger' || Senseis : http://senseis.xmp.net/?tderz ||
ENFP (MBTI) - 'Find your own style within the Fundamentals of Go! '

Hi Tommie thanks for looking. Did you see my latest fix? See any problems?

Here is the real game it came from (I'm black, one of my many alternate names )
http://eidogo.com/#url:http://files.gok ... Minute.sgf

W21 - if stretch instead of double-hane -> perhaps sente?
W32 - peep, I'm not sure about


Interesting position - my first attempts were wrong

_________________
Greetings,
Tommie

3dan EGF (AGA no 13477) || Tommie on KGS: 'June'|| DGS: 'Zhi Laohu' 纸老虎 = 'paper tiger' || Senseis : http://senseis.xmp.net/?tderz ||
ENFP (MBTI) - 'Find your own style within the Fundamentals of Go! '