What is your next move? (Blind spot spotted)

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Gomoto
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What is your next move? (Blind spot spotted)

Post by Gomoto »

There are several options for black to respond locally to the marked white stone.

One very interesting play did not enter my mind at all until review time. What are your candidate moves?
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . O . . . . |
$$ | . . . . O X . O . . . . . O . . X . . |
$$ | . . . O . . . . . , X . O X . X . . . |
$$ | . . . . . . . . . . . W . X . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . O O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . X X . . . . . . . . X O O . . |
$$ | . . X X O O X X . . . . . . X X O . . |
$$ | . . . O . O O X . . . . . . . . O . . |
$$ | . . X O . O X O O , . . . . . X X . . |
$$ | . . X O . X . . . . . . . . . . . . . |
$$ | . . X X O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Uberdude
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Re: What is your next move? (Blind spot spotted)

Post by Uberdude »

Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . b . . O . . . . |
$$ | . . . . O X . O . . . . . O . . X . . |
$$ | . . . O . . . . . , X . O X . X . . . |
$$ | . . . . . . . . . . a W . X . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . O O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . X X . . . . . . . . X O O . . |
$$ | . . X X O O X X . . . . . . X X O . . |
$$ | . . . O . O O X . . . . . . . . O . . |
$$ | . . X O . O X O O , . . . . . X X . . |
$$ | . . X O . X . . . . . . . . . . . . . |
$$ | . . X X O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Similar to around move 28 in viewtopic.php?p=234158#p234158
Gomoto
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Re: What is your next move? (Blind spot spotted)

Post by Gomoto »

A and B are good options.
C is inferior to B.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . b . . O . . . . |
$$ | . . . . O X . O . . . c . O . . X . . |
$$ | . . . O . . . . . , X . O X . X . . . |
$$ | . . . . . . . . . . a W . X . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . O O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . X X . . . . . . . . X O O . . |
$$ | . . X X O O X X . . . . . . X X O . . |
$$ | . . . O . O O X . . . . . . . . O . . |
$$ | . . X O . O X O O , . . . . . X X . . |
$$ | . . X O . X . . . . . . . . . . . . . |
$$ | . . X X O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
If white just connects move 1 is already better than the play at M17.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . 1 . . O . . . . |
$$ | . . . . O X . O . . . . 2 O . . X . . |
$$ | . . . O . . . . . , X . O X . X . . . |
$$ | . . . . . . . . . . . O . X . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . O O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . X X . . . . . . . . X O O . . |
$$ | . . X X O O X X . . . . . . X X O . . |
$$ | . . . O . O O X . . . . . . . . O . . |
$$ | . . X O . O X O O , . . . . . X X . . |
$$ | . . X O . X . . . . . . . . . . . . . |
$$ | . . X X O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
This variation develops into a Ko.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . 1 4 . O . . . . |
$$ | . . . . O X . O . . 3 2 . O . . X . . |
$$ | . . . O . . . . . , X 5 O X . X . . . |
$$ | . . . . . . . . . . . O 6 X . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . O O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . X X . . . . . . . . X O O . . |
$$ | . . X X O O X X . . . . . . X X O . . |
$$ | . . . O . O O X . . . . . . . . O . . |
$$ | . . X O . O X O O , . . . . . X X . . |
$$ | . . X O . X . . . . . . . . . . . . . |
$$ | . . X X O O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
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