All kinds of comments appreciated.

Is my analysis correct that black was actually winning until move 121 and then protected a cut that actually didn't work and thus gave the quite sure win away?

are you sure the cut doesn't work? how does b respond if b plays tenuki at 121 and w plays n6?

this looks like it works:

Click Here To Show Diagram Code

[go]$$c
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . . . . . . |
$$ | . . O X X O . . . . . . . X . . . . . |
$$ | . . O , X . . O . , O . . . . X . . . |
$$ | . . . O X . . . . . . . X . . . X . . |
$$ | . . O . X . . X X . . X . . . . O . . |
$$ | . O X . . . . . . X X O X . . . . . . |
$$ | . . X . X . . O O . O O X . . . . . . |
$$ | . . . . . . X X . O . X O O O O O . . |
$$ | . . . , . . . . . , . X O . O X . . . |
$$ | . . . . . . . . . O . X O O X O X O . |
$$ | . X X . . . . O . . O X X X X O O X . |
$$ | . O O X X X . O . O 3 . . . X . . . . |
$$ | . O X O O X X X O 1 X X 2 O . O O . . |
$$ | . . X O O O X O . O 5 4 b O . O X . . |
$$ | . . O O . X O O . O 7 6 X X . , X . . |
$$ | . . . . O X O . O X X a . . . X . . . |
$$ | . . . . . X O X X . . . . . . . . . . |
$$ | . . . . . . X . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

(at the moment it doesn't show the diagram, but I don't know why...)

@

I don't see any difference between your code and mine.
Anyway, this way there is no cut, right?

if white plays at then black is cut...

okay, didn't see that one,
then the 3 one to the right.

Click Here To Show Diagram Code

[go]$$c This was what I meant, btw the marked stones are in a little trouble if they decide to cut.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . . . . . . |
$$ | . . O X X O . . . . . . . X . . . . . |
$$ | . . O , X . . O . , O . . . . X . . . |
$$ | . . . O X . . . . . . . X . . . X . . |
$$ | . . O . X . . X X . . X . . . . O . . |
$$ | . O X . . . . . . X X O X . . . . . . |
$$ | . . X . X . . O O . O O X . . . . . . |
$$ | . . . . . . X X . O . X O O O O O . . |
$$ | . . . , . . . . . , . X O . O X . . . |
$$ | . . . . . . . . . O . X O O X O X O . |
$$ | . X X . . . . O . . O X X X X O O X . |
$$ | . O O X X X . O . O . 3 . . X . . . . |
$$ | . O X O O X X X O 1 X X 2 O . O O . . |
$$ | . . X O O O X O . O 5 4 9 O . O X . . |
$$ | . . O O . X O O . O 7 6 B B . , X . . |
$$ | . . . . O X O . O X X 8 . . . X . . . |
$$ | . . . . . X O X X . . . . . . . . . . |
$$ | . . . . . . X . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Click Here To Show Diagram Code

[go]$$c This way is no question anymore.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . . . . . . |
$$ | . . O X X O . . . . . . . X . . . . . |
$$ | . . O , X . . O . , O . . . . X . . . |
$$ | . . . O X . . . . . . . X . . . X . . |
$$ | . . O . X . . X X . . X . . . . O . . |
$$ | . O X . . . . . . X X O X . . . . . . |
$$ | . . X . X . . O O . O O X . . . . . . |
$$ | . . . . . . X X . O . X O O O O O . . |
$$ | . . . , . . . . . , . X O . O X . . . |
$$ | . . . . . . . . . O . X O O X O X O . |
$$ | . X X . . . . O . . O X X X X O O X . |
$$ | . O O X X X . O . O . 3 . . X . . . . |
$$ | . O X O O X X X O 1 X X 2 O . O O . . |
$$ | . . X O O O X O 9 O 5 4 8 O . O X . . |
$$ | . . O O . X O O . O 6 7 X X . , X . . |
$$ | . . . . O X O . O X X . . . . X . . . |
$$ | . . . . . X O X X . . . . . . . . . . |
$$ | . . . . . . X . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Click Here To Show Diagram Code

[go]$$c Maybe this way is more normal.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . . . . . . |
$$ | . . O X X O . . . . . . . X . . . . . |
$$ | . . O , X . . O . , O . . . . X . . . |
$$ | . . . O X . . . . . . . X . . . X . . |
$$ | . . O . X . . X X . . X . . . . O . . |
$$ | . O X . . . . . . X X O X . . . . . . |
$$ | . . X . X . . O O . O O X . . . . . . |
$$ | . . . . . . X X . O . X O O O O O . . |
$$ | . . . , . . . . . , . X O . O X . . . |
$$ | . . . . . . . . . O . X O O X O X O . |
$$ | . X X . . . . O . . O X X X X O O X . |
$$ | . O O X X X . O . O . 3 . . X . . . . |
$$ | . O X O O X X X O 1 X X 2 O . O O . . |
$$ | . . X O O O X O . O 5 4 b O . O X . . |
$$ | . . O O . X O O . O 7 6 X X a , X . . |
$$ | . . . . O X O . O X X 8 0 . . X . . . |
$$ | . . . . . X O X X . . 9 . . . . . . . |
$$ | . . . . . . X . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

yup, i saw that, too, but your isn't really a tenuki (as i originally assumed "if b plays tenuki") , just another (better) way of defending the cut since it puts pressure on white's group.

if your in those diagrams is not there, white can cut black so you couldn't tenuki