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problem from game
Posted: Tue Aug 31, 2010 9:22 am
by emeraldemon
This is a position from a DGS game I finished not to long ago. Does black need to spend a move connecting the center stones, or can black play elsewhere? Looked at another way, can white cut off the marked stones?
$$Bc can white cut?
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . . . . . . X O X X O . O X . . . |
$$ | . O X . . X X . X X O O . O X . . . . |
$$ | . O . X . X O O . O . O . O . X . . . |
$$ | . . . . . O X O . . O . . . . . . . . |
$$ | . . O . O . X O . . O X . X . X . . . |
$$ | . . . . O X . B B O O O X . . . . . . |
$$ | . . . . . X O O B B O X . . . . X . . |
$$ | . . . O . . . . B . O X . X . . . . . |
$$ | . . . , . . O O B , O X . . O , X X . |
$$ | . . . . . . . . B . X O O . . . . O . |
$$ | . . . O . . . . . . X . . . . . O . . |
$$ | . O O . . O . . . . . . . O . O X . . |
$$ | . O X X . . . . . . . . X X X O . . . |
$$ | X X . . . O . . . . X . . . X O . . . |
$$ | . . . X . . . . O , . . O . X X O O . |
$$ | . . . X . O . X O . X . . . . O X O . |
$$ | . . . X O . . . O X . . . . . X X X O |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$Bc can white cut?
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . . . . . . X O X X O . O X . . . |
$$ | . O X . . X X . X X O O . O X . . . . |
$$ | . O . X . X O O . O . O . O . X . . . |
$$ | . . . . . O X O . . O . . . . . . . . |
$$ | . . O . O . X O . . O X . X . X . . . |
$$ | . . . . O X . B B O O O X . . . . . . |
$$ | . . . . . X O O B B O X . . . . X . . |
$$ | . . . O . . . . B . O X . X . . . . . |
$$ | . . . , . . O O B , O X . . O , X X . |
$$ | . . . . . . . . B . X O O . . . . O . |
$$ | . . . O . . . . . . X . . . . . O . . |
$$ | . O O . . O . . . . . . . O . O X . . |
$$ | . O X X . . . . . . . . X X X O . . . |
$$ | X X . . . O . . . . X . . . X O . . . |
$$ | . . . X . . . . O , . . O . X X O O . |
$$ | . . . X . O . X O . X . . . . O X O . |
$$ | . . . X O . . . O X . . . . . X X X O |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Re: problem from game
Posted: Tue Aug 31, 2010 9:30 am
by daniel_the_smith
Re: problem from game
Posted: Tue Aug 31, 2010 11:56 am
by LocoRon
Re: problem from game
Posted: Tue Aug 31, 2010 12:06 pm
by DrStraw
The only possible move to disconnect would be M7 but black can answer with K6 and all is safe. Black needs to watch out as the position changes.
An interesting move in this position is S7. How should white respond to that?
Re: problem from game
Posted: Tue Aug 31, 2010 12:14 pm
by emeraldemon
What about something like this?
$$Wc can white cut?
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . . . . . . X O X X O . O X . . . |
$$ | . O X . . X X . X X O O . O X . . . . |
$$ | . O . X . X O O . O . O . O . X . . . |
$$ | . . . . . O X O . . O . . . . . . . . |
$$ | . . O . O . X O . . O X . X . X . . . |
$$ | . . . . O X . B B O O O X . . . . . . |
$$ | . . . . . X O O B B O X . . . . X . . |
$$ | . . . O . . . . B . O X . X . . . . . |
$$ | . . . , . . O O B , O X . . O , X X . |
$$ | . . . . . . . . B . X O O . . . . O . |
$$ | . . . O . . . . . 5 X . . . . . O . . |
$$ | . O O . . O . . . 4 3 1 . O . O X . . |
$$ | . O X X . . . . . . 2 . X X X O . . . |
$$ | X X . . . O . . . . X . . . X O . . . |
$$ | . . . X . . . . O , . . O . X X O O . |
$$ | . . . X . O . X O . X . . . . O X O . |
$$ | . . . X O . . . O X . . . . . X X X O |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$Wc can white cut?
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . . . . . . X O X X O . O X . . . |
$$ | . O X . . X X . X X O O . O X . . . . |
$$ | . O . X . X O O . O . O . O . X . . . |
$$ | . . . . . O X O . . O . . . . . . . . |
$$ | . . O . O . X O . . O X . X . X . . . |
$$ | . . . . O X . B B O O O X . . . . . . |
$$ | . . . . . X O O B B O X . . . . X . . |
$$ | . . . O . . . . B . O X . X . . . . . |
$$ | . . . , . . O O B , O X . . O , X X . |
$$ | . . . . . . . . B . X O O . . . . O . |
$$ | . . . O . . . . . 5 X . . . . . O . . |
$$ | . O O . . O . . . 4 3 1 . O . O X . . |
$$ | . O X X . . . . . . 2 . X X X O . . . |
$$ | X X . . . O . . . . X . . . X O . . . |
$$ | . . . X . . . . O , . . O . X X O O . |
$$ | . . . X . O . X O . X . . . . O X O . |
$$ | . . . X O . . . O X . . . . . X X X O |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Re: problem from game
Posted: Tue Aug 31, 2010 12:49 pm
by DrStraw
emeraldemon wrote:What about something like this?
Your move 2 would be very bad as it doesn't really protect anything. You have to be more indirect as I showed in my earlier post.
Re: problem from game
Posted: Tue Aug 31, 2010 12:55 pm
by daniel_the_smith
Despite
looking bad, it appears that black is still connected after that sequence.
Re: problem from game
Posted: Tue Aug 31, 2010 9:21 pm
by emeraldemon
You're both right, I was looking at this wrong. Thanks for the help!