Hey folks!
When you're questioning certain moves i guess you need to consider first the ideas of the moves that were played before the questioned move.
$$c
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$$ | . . . X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . a . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
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[go]$$c
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$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . a . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .[/go]
When I play the shusaku-kosumi I want thickness on the outside while my opponent gets low(third-line) territory. Therefore a move around 'a' for black should be top priority when white plays tenuki and black get the chance.
$$c
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$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , X . . . . .
$$ | . . O . . . . . . .
$$ | . . b 1 . . . . . .
$$ | . . 2 5 . . . . . .
$$ | . 4 . 3 . . . . . .
$$ | . . . . . . . . . .
$$ | . . 6 . . . . . . .
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[go]$$c
$$ ------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , X . . . . .
$$ | . . O . . . . . . .
$$ | . . b 1 . . . . . .
$$ | . . 2 5 . . . . . .
$$ | . 4 . 3 . . . . . .
$$ | . . . . . . . . . .
$$ | . . 6 . . . . . . .[/go]
White does not crawl at 'b' but tries to be ahead so he plays 2. For the same reason (gettingahead) black now plays 3 continuing to press white down. White cant cut directly because of his weak position so he simply secures life with 4 and 6 while black gets his wished thickness.
$$c
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$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . 2 . . . . . .
$$ | . . . . . . . . . .
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[go]$$c
$$ ------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . 2 . . . . . .
$$ | . . . . . . . . . .[/go]
Well when I play white I dont like to play along blacks plan, so for white playing '2' himself to jump a line higher (fourth line) is totally natural.
$$c
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$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . a . . . . . . .
$$ | . . b . . . . . . .
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[go]$$c
$$ ------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . a . . . . . . .
$$ | . . b . . . . . . .[/go]
Moves like 'a' or 'b' for black are of course possible, depending on what is one the lower side of the board these moves can even be very good, but for me on the first glance these moves dont feel natural, because they're not helping black to build strong thickness (as planed when playing kosumi) but are forcing white to seperate blacks stones into two groups.
$$c
$$ ------------------
$$ | . . . . . . . . . .
$$ | . 4 . . . . . . . .
$$ | . 2 3 X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . a . . . . . .
$$ | . . . . . . . . . .
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[go]$$c
$$ ------------------
$$ | . . . . . . . . . .
$$ | . 4 . . . . . . . .
$$ | . 2 3 X . . . . . .
$$ | . . . , 1 . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . a . . . . . .
$$ | . . . . . . . . . .[/go]
The game was played like this. I think 2 and 3 are both mistakes in this early stage of the game. White needs to extend on the side (as mentioned f.e. at 'a'). Grasping some small points in the corner with 2 is to slow, black should tenuki! Answering with 3 is also questionable, bumping whites stone is forcing him to play 4, a very good point (in the endgame). In the end blacks 3 stone helped white to get some points, nothing more

.
$$c
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$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . O . . . . . , . . . . . , X . . |
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$$ | . . . . . . . . . . . . . . . . 1 . . |
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$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
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[go]$$c
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . O . . . . . , . . . . . , X . . |
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$$ | . . . . . . . . . . . . . . . . 1 . . |
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Personally in this kind of position I like the 3 space low pincer. It isnt that popular nowadays but the acient go masters were quiet fond of it

Maybe you can post another game of yours and we'll analyse it again, guess there was said enough about this game ^_^