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Problem from SDK game
Posted: Thu Sep 30, 2010 9:09 am
by emeraldemon
This came up in a game yesterday:
$$W Moves 1 to 9
Click Here To Show Diagram Code [go]$$W Moves 1 to 9What is the best move for both sides? In the actual game, it went like this:
But I'm wondering if there's a better way to play.
Re: Problem from SDK game
Posted: Thu Sep 30, 2010 9:18 am
by Chew Terr
$$W
Click Here To Show Diagram Code [go]$$W Unless I'm missing something, this seems better for black. The followup could change, but it seems like 6 is the vital point to prevent a killing shape, which would get a seki, as in the real game. But I could easily be missing something. =D
Re: Problem from SDK game
Posted: Thu Sep 30, 2010 9:29 am
by entropi
Referring to the game sequence, why not
at
?
White can make an eye by capturing the black stone but black has enough outside liberties to capture 5 stones back, thus creating an alive eye shape (without seki- i.e. 10 points better for black). I may easily be missing something though.
Apart from that, it's indeed a nice problem. I would be surprised if it turns out that it can be killed.
Re: Problem from SDK game
Posted: Thu Sep 30, 2010 10:37 am
by emeraldemon
Re: Problem from SDK game
Posted: Thu Sep 30, 2010 1:43 pm
by Loons
$$W Moves 1 to 9
Click Here To Show Diagram Code [go]$$W Moves 1 to 9Did people consider this 3 ?
2 doesn't seem like an obvious move to me anyway. I'd start to think about something like
My attempt:
What about
$$W Moves 1 to 9
Click Here To Show Diagram Code [go]$$W Moves 1 to 9After which I have trouble seeing a successful continuation for white. If he captures 4, he runs into shortage of liberty problems.
For fun, here`s one of those ko-everywhereish problems from one of my games:
$$Bc Black to play and kill
Click Here To Show Diagram Code [go]$$Bc Black to play and killAnyone else have any fun tsumego from games ?
Re: Problem from SDK game
Posted: Fri Oct 01, 2010 11:31 am
by LR24
$$W best for white
Click Here To Show Diagram Code [go]$$W best for white$$B best for black
Click Here To Show Diagram Code [go]$$B best for blackI see no way for white to kill or even get seki.
$$W
Click Here To Show Diagram Code [go]$$W/edit: uhh, this turns into a ko with a-c. black 4 at a, as loons suggested, looks good $$W
Click Here To Show Diagram Code [go]$$W$$W after the exchange
Click Here To Show Diagram Code [go]$$W after the exchangeOf course black needs one of the liberties marked o, so he needs to defend once more after this exchange.
Usual "I'm a kyu-Player so don't believe anything I say."-disclamer here.
at 
?