Dosaku's Masterpiece - study

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xed_over
Oza
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Re: Dosaku's Masterpiece - study

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moves 31-40 ...


Click Here To Show Diagram Code
[go]$$Wm31 moves 31-40
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 4 O . O X 2 . . . . . . . . . . |
$$ | . . X , . . 1 O X , 9 . . . . X . . . |
$$ | . . . X . . . X 5 6 . . . . . . . . . |
$$ | . . . . 3 . . . 7 8 . . . . . . . . . |
$$ | . . O . . . . . 0 . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . . O X . X . . . , . . . . O , O . . |
$$ | . . O X X O . . . . O . . . X O . . . |
$$ | . . O O X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]



(variation for :w33: )
Click Here To Show Diagram Code
[go]$$W variation for :w33:
$$ -------------------------
$$ | . . . . . . . . . . . .
$$ | . . . . . . . . . . . .
$$ | . . . . O . O X X . . .
$$ | . . X , . . O O X , . .
$$ | . . . X . . . X . . . .
$$ | . . . . . 1 . . . . . .
$$ | . . O 2 . . . . . . . .
$$ | . . . . . . . . . . . .
$$ | . . . . . . . . . . . .[/go]

Playing :w1: here and letting Black escape is uninteresting.



:b36: Black has to sacrifice H15 stone

(variation for :b36: )
Click Here To Show Diagram Code
[go]$$cB variation for :b36:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X O . O X X . . . . . . . . . . |
$$ | . . X , . . O O X , . . . . . X . . . |
$$ | . . . X . . . Y O 2 . . . . . . . . . |
$$ | . . . . O . . 1 . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , . . . |[/go]

Pulling the "T" stone out would only provoke 2, limiting Black's prospects on the right.



:w39: is an excellent countermeasure to Black's sequence, and is the main reason why H15 would have been better left unplayed.

(variation for :w39: )
Click Here To Show Diagram Code
[go]$$W variation for :w39:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X O . O X X . . . . . . . . . . |
$$ | . . X , . . O O X , . . . . . X . . . |
$$ | . . . X . . . Y O X . . . . . . . . . |
$$ | . . . . O . . . O X . . . . . . . . . |
$$ | . . O . . . . . 1 2 . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , . . . |[/go]

This only helps Black strengthen his wall. This is probably what Black was hoping for when he played "T".



moves 41-50 ...

Click Here To Show Diagram Code
[go]$$Wm41 moves 41-50
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X O . O X X . 7 6 . 3 4 . . . . |
$$ | . . X , . . O O X 2 O 8 . 5 . X . . . |
$$ | . . . X . . . X O X . . . . . 9 0 . . |
$$ | . . . . O . . 1 O X . . . . . . . . . |
$$ | . . O . . . . . X . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . . O X . X . . . , . . . . O , O . . |
$$ | . . O X X O . . . . O . . . X O . . . |
$$ | . . O O X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

:w43: is an attempt to settle White quickly.

(variation for :w43: )
Click Here To Show Diagram Code
[go]$$W variation for :w43:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . 8 . . . . |
$$ | . . . . . . . . . . . . . 6 3 9 5 . . |
$$ | . . . X O . O X X . . . . . 2 1 . . . |
$$ | . . X , . . O O X X O . . . 4 X 7 . . |
$$ | . . . X . . . X O X . . . . . . 0 . . |
$$ | . . . . O . . O O X . . . . . . . . . |
$$ | . . O . . . . . X . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

:w1: looks attractive, but would be inadvisable.

(variation for :w43: cont)
Click Here To Show Diagram Code
[go]$$Wm11 variation for :w43: cont
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . X O O O . . |
$$ | . . . X O . O X X . . . 6 . X O 3 5 . |
$$ | . . X , . . O O X X O . . . X X O 2 . |
$$ | . . . X . . . X O X . . . . . . X 1 . |
$$ | . . . . O . . O O X . . . . . . 4 a . |
$$ | . . O . . . . . X . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

Because Black's outside position is too good to allow.

:b4: atari at a would be a tragic blunder.

(variation for atari at a)
Click Here To Show Diagram Code
[go]$$Wm11 variation for atari at a
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . 8 X O O O . . |
$$ | . . . X O . O X X . . 9 . 7 X O O . . |
$$ | . . X , . . O O X X O . . . X X O X . |
$$ | . . . X . . . X O X . . . . . 5 X O 6 |
$$ | . . . . O . . O O X . . . . . . . 4 . |
$$ | . . O . . . . . X . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]



Click Here To Show Diagram Code
[go]$$ black's tragic blunder
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . Z . . . . |
$$ | . . . . . . . . . . . . Z Z O O O . . |
$$ | . . . X O . O X X . . O . O Y O O . . |
$$ | . . X , . . O O X X O . . . Y Y O X . |
$$ | . . . X . . . X O X . . . . . O X . X |
$$ | . . . . O . . O O X . . . . . . . X . |
$$ | . . O . . . . . X . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

Black cannot now avoid losing one of the marked groups.



hummm... there's a bug with adding coordinates to the board and specifying move numbers with white moving first.
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