Move 36 is another in a series of moves which all suggest that white is on autopilot.
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[go]$$Wc Aji keshi
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$$ | . . . X . . X . . . . . . . O . . . . |
$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
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$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . O . . O X . . . |
$$ | . . . . . . . . . . . . . O . O X . . |
$$ | . . . . . . . . . . . . X X . O X . . |
$$ | . . . X . . . . . , O 1 2 . . O X . . |
$$ | . . . . . . . . . . O X . X . O O . . |
$$ | . . . . . . . . . O X . X . . . . . . |
$$ | . . . . . . . . . . . X . . . . . . . |
$$ ---------------------------------------[/go]
It is not a blatantly bad move, but it is aji keshi. It could be saved for a ko threat.
Black has two eyes, so it is best to leave it alone and concentrate on more profitable moves on other parts of the board.
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[go]$$Wc
$$ | . . . , . . . . . , . . . . . X . . . |
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$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . O . . O X . . . |
$$ | . . . . . . . . . . . . . O . O X . . |
$$ | . . . . . . . . . . . . X X . O X . . |
$$ | . . . X . . . . . , O . . . . O X . . |
$$ | . . . . . . . . . . O X C X . O O . . |
$$ | . . . . . . . . . O X C X . . . . . . |
$$ | . . . . . . . . . . . X . . . . . . . |
$$ ---------------------------------------[/go]
My favorite would be to start making shape on the lower side, and simultaneously threaten his D4 stone:
- Click Here To Show Diagram Code
[go]$$Wc Aji keshi
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$$ | . . . X . . X . . . . . . . O . . . . |
$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . O . . O X . . . |
$$ | . . . . . . . . . . . . . O . O X . . |
$$ | . . . . . . . . . . . . X X . O X . . |
$$ | . . . X . . . . . , O . . . . O X . . |
$$ | . . . . . 1 . . . . O X . X . O O . . |
$$ | . . . . . . . . . O X . X . . . . . . |
$$ | . . . . . . . . . . . X . . . . . . . |
$$ ---------------------------------------[/go]
The appearance of white being on autopilot continues with move 38:
Moves 'a' and 'b' are miai, so black survives, even if he ignores your move
- Click Here To Show Diagram Code
[go]$$Wc
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$$ | . . . X . . X . . . . . . . O . . . . |
$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . O . . O X . . . |
$$ | . . . . . . . . . . . . . O . O X . . |
$$ | . . . . . . . . . . . . X X . O X . . |
$$ | . . . X . . . . . , O O X . a O X . . |
$$ | . . . . . c . . . . O X . X . O O d . |
$$ | . . . . . . . . . O X . X b 1 . . . . |
$$ | . . . . . . . . . . . X . . . . . . . |
$$ ---------------------------------------[/go]
That means that P2 is gote, and small.
Again, something around 'c' looks better. If you really feel that you must grab eye space in gote, 'd' is bigger, and closer to being sente.
White continues the slackness with move 40:
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[go]$$W Too passive
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$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
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$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . 1 O . . O X . . . |
$$ | . . . . . . . . . . 2 X . O . O X . . |
$$ | . . . . . . . . . . . . X X . O X . . |
$$ | . . . X . . . . . , W W X . . O X . . |
$$ | . . . . . . . . . . W X . X . O O . . |
$$ | . . . . . . . . . O X . X . O . . . . |
$$ | . . . . . . . . . . . X . . . . . . . |
$$ ---------------------------------------[/go]
This gives black just the edge that he needs to endanger the three white stones.
Any time that your opponent plays a 1-on-1 contact move, the hane should be on your short list of replies. In this particular case, it looks better:
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[go]$$W Moves 40 to 40
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$$ | . . . X . . X . . . . . . . O . . . . |
$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
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$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . O . . O X . . . |
$$ | . . . . . . . . . . 1 X . O . O X . . |
$$ | . . . . . . . . . . . . X X . O X . . |
$$ | . . . X . . . . . , O O X . . O X . . |
$$ | . . . . . . . . . . O X . X . O O . . |
$$ | . . . . . . . . . O X . X . O . . . . |
$$ | . . . . . . . . . . . X . . . . . . . |
$$ ---------------------------------------[/go]
Ian Butler wrote:
... I want to know where I made the gravest mistakes. Probably the way I handled the lower right was very bad, but I have a hard time pinpointing what I did wrong exactly.
As my comments in this post - and other similar comments by other reviewers suggest - you really did not make any 'very bad' moves. There were no 'grave mistakes'.
Instead, you made a series of suboptimal moves. None of them were serious mistakes, but the collective effect of several in a row is the same as one really bad move.