@Knotwilg; For sure your table shape for 50 is better and avoids the problem of the cut. I would also think about solid connect of c6 as, although it's weaker around e6, I don't want to give black b7 for maximum attacking possibilities on the c9 group (b10 shape attack for example). If black does cut white at e6 it's not a big deal as the b4 slide and b9 attach give white eyespace inside. I think the point about white not wanting to connect on dame is an important one though, as white's outside group is healthy and there's space inside (and indeed taking away black's corner territory is nice).
Here is my plan to deal with the cut, should black stubbornly persist with that idea (he's do better not to!). Not only does white live, but black's left side group is dying.
$$Wc Position at move 50
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . X X O . . . X . . X . . . X . |
$$ | . . . X . O O . . , . . . . O O . . . |
$$ | . X X . . . . . . . . . . . . . X . . |
$$ | . O O O O . . . . . . . . . O O X . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . b . , . . . . . , . . . . . , . . . |
$$ | . a X . O . . . . . . . . . . . O . . |
$$ | . c . X . 5 . . . . . . . . . . . . . |
$$ | . . O X 4 O . . . . . . . . . . . . . |
$$ | . . 1 O 2 . . . . . . . . . . . O . . |
$$ | . . . 6 3 O O . . . . . . . . . . . . |
$$ | . 7 . X X X O . . , . . . . . O . . . |
$$ | . 9 8 . X . X O O . . . . X . . X . . |
$$ | . 0 . . . X . X . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
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- Click Here To Show Diagram Code
[go]$$Wc Position at move 50
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . X X O . . . X . . X . . . X . |
$$ | . . . X . O O . . , . . . . O O . . . |
$$ | . X X . . . . . . . . . . . . . X . . |
$$ | . O O O O . . . . . . . . . O O X . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . b . , . . . . . , . . . . . , . . . |
$$ | . a X . O . . . . . . . . . . . O . . |
$$ | . c . X . 5 . . . . . . . . . . . . . |
$$ | . . O X 4 O . . . . . . . . . . . . . |
$$ | . . 1 O 2 . . . . . . . . . . . O . . |
$$ | . . . 6 3 O O . . . . . . . . . . . . |
$$ | . 7 . X X X O . . , . . . . . O . . . |
$$ | . 9 8 . X . X O O . . . . X . . X . . |
$$ | . 0 . . . X . X . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]