The Intrepid
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by The Intrepid Mon Aug 27, 2012 2:32 am
@ topazg
Wouldn't White then continue with 7, forcing Black into a less advantageous ko than before?
$$W
Click Here To Show Diagram Code [go]$$W
Ontological imperative holds that my losses occurred only in imagination.
topazg
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by topazg Mon Aug 27, 2012 2:43 am
@intrepid:
Quite right. I was thinking Black has miai, but he should probably take
in yours first.
$$W
Click Here To Show Diagram Code [go]$$WBecause of "a", I'm struggling to see how White can restrict Black's liberties enough to create a ko..
The Intrepid
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by The Intrepid Mon Aug 27, 2012 3:00 am
@topazg
This should work, it seems:
$$W
Click Here To Show Diagram Code [go]$$W$$B
Click Here To Show Diagram Code [go]$$BEdit: Never mind, this does not work ... hmm
Last edited by
The Intrepid on Mon Aug 27, 2012 3:02 am, edited 1 time in total.
Ontological imperative holds that my losses occurred only in imagination.
topazg
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by topazg Mon Aug 27, 2012 3:02 am
@Intrepid:
Are you sure?
$$B
Click Here To Show Diagram Code [go]$$BNow what? White can't play at "a", and so after "b" Black is unconditionally alive?
The Intrepid
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by The Intrepid Mon Aug 27, 2012 3:03 am
Ontological imperative holds that my losses occurred only in imagination.
topazg
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by topazg Mon Aug 27, 2012 3:34 am
Hehe
$$B
Click Here To Show Diagram Code [go]$$BEven this is obviously alive, as White can't play at "a", and Black can.
EDIT: ok, an obvious ko: $$B
Click Here To Show Diagram Code [go]$$BHowever, this is a two step approach ko, so timing is difficult. I can't see a better way for White, but there may be one (mitsun is a lot stronger than I am).
The Intrepid
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by The Intrepid Mon Aug 27, 2012 3:47 am
Ontological imperative holds that my losses occurred only in imagination.
Magicwand
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by Magicwand Mon Aug 27, 2012 5:53 am
R15 PEEP
"The more we think we know about Words by neil peart, music by geddy lee and alex lifeson
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by mitsun Mon Aug 27, 2012 12:19 pm
Topazg & Intrepid
I think the problem is symmetric -- B can play either way and W gets an approach move ko. In your sequence, W does not have to prevent B from playing (a) or throw-in to force B to play (a).
$$W
Click Here To Show Diagram Code [go]$$W$$W
Click Here To Show Diagram Code [go]$$W
in yours first.
