So I spent a long time wanting to play this move, which is clearly good, but I felt too reducible:

Click Here To Show Diagram Code

[go]$$Bcm99
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . O X O O . |
$$ | . . . . . 1 X . . . . . X X X O O X . |
$$ | . . O , . . O X 3 , . X . X O X X X . |
$$ | . . . O . . O 2 . . X . X O O O X O . |
$$ | . . . . . . . . . . . . O O . X O O O |
$$ | . . . . . . . . . 5 . . . . . X X O . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . X . X O . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . O O . 4 . . . . . . . . |
$$ | . X X . . . . O X . . . . . . O X . . |
$$ | . X O O . X O . X . . . . . X X O O . |
$$ | . O . . . . O X . . . . . X X O . . . |
$$ | . . . O . . O X O X . . . X O O O . . |
$$ | . . . . . X X O X . X . X O X . . . . |
$$ | . . . . . . . O . . . . X O X O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Black has a possibility of a ko fight here.
Unfortunately for him, he doesn't seem to have the necessary ko threats to make it work.

Click Here To Show Diagram Code

[go]$$Bc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . O X O O . |
$$ | . . . . . X X . . . . . X X X O O X . |
$$ | . . O , . . O X X , . X . X O X X X . |
$$ | . . . O . . O O . . X . X O O O X O . |
$$ | . . . . . . . . . O 2 3 O O . X O O O |
$$ | . . . . . . . . . . 1 4 5 a . X X O . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . X . X O . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . O O . . . . . . . . . . |
$$ | . X X . . . . O X . . . . . . O X . . |
$$ | . X O O . X O . X . . . . . X X O O . |
$$ | . O . . . . O X . . . . . X X O . . . |
$$ | . . . O . . O X O X . . . X O O O . . |
$$ | . . . . . X X O X . X . X O X . . . . |
$$ | . . . . . . . O . . . . X O X O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I feel quite comfortable ignoring that move, though surely I wanted to play down there myself. I will have a further look if black has some lethal followup I'm not seeing. Mostly I'm torn about continuing in the middle. I'm a little leery because if I keep playing moves in the centre and ceding corner moves, these centre moves must actually be big potatoes...

If I get 'c', black might have to live on the right. 'a' connects my thickness. 'b' seems huge for both to me.

Click Here To Show Diagram Code

[go]$$Bcm99
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . O X O O . |
$$ | . . . . . 1 X . . . . . X X X O O X . |
$$ | . . O , . . O X 3 , . X . X O X X X . |
$$ | . . . O . . O 2 . . X . X O O O X O . |
$$ | . . . . . . . . . 4 a . O O . X O O O |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . X . X O . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . O O . b . . . . c . . . |
$$ | . X X . . . . O X . . . . . . O X . . |
$$ | . X O O . X O . X . . . . . X X O O . |
$$ | . O . . . . O X . . . . . X X O . . . |
$$ | . . . O . . O X O X . . . X O O O . . |
$$ | . . . . . X X O X . X . X O X . . . . |
$$ | . . . 5 . . . O . . . . X O X O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Eh, I think I've been making mistakes. I have part of a centre made of wet tissue paper. I think I've mentioned 104 before. It's a move at the edge of two moyos, and aims to rescue my cutting stone on the right.

Xoxo must see a followup or have considered bottom left sente for me, neither of which I am sure of.

Why? Maybe he thought a ~40 point gote move was the biggest on the board, which I find hard to disagree with.

Relatedly, I was never very confident in my own sequence bottom left, which is perhaps why I misunderestimated it.

What was your sequence there? Or what did you hope for but which black resistances were troublesome?

Hmm... Earlier, something like this:?

Click Here To Show Diagram Code

[go]$$Wc
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . O O . . . . . . . . . . |
$$ | . X X . . . . O X . . . . . . O X . . |
$$ | . X O O . X O . X . . . . . X X O O . |
$$ | . O . . 7 5 O X . . . . . X X O . . . |
$$ | . . . O 6 4 O X O X . . . X O O O . . |
$$ | . . . 9 3 X X O X 2 X . X O X . . . . |
$$ | . . . . 8 0 . O 1 . . . X O X O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Click Here To Show Diagram Code

[go]$$Wc
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . O O . . . . . . . . . . |
$$ | . X X . . . . O X . . . . . . O X . . |
$$ | . X O O . X O . X . . . . . X X O O . |
$$ | . O . . . . O X . . . . . X X O . . . |
$$ | . . . O 7 5 O X O X . . . X O O O . . |
$$ | . . . 6 3 X X O X 2 X . X O X . . . . |
$$ | . . . . 4 8 . O 1 . . . X O X O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Which looks worryingly successful, doesn't it. Black could rob the corner or something. Also how sente and likely and necessary was at some past point anyway?

Click Here To Show Diagram Code

[go]$$Bc cf.
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . O O . . . . . . . . . . |
$$ | . X X . . . . O X . . . . . . O X . . |
$$ | . X O O . X O . X . . . . . X X O O . |
$$ | . O . . . . O X . . . . . X X O . . . |
$$ | . . . O . . O X O X . . . X O O O . . |
$$ | . . 4 3 . X X O X . X . X O X . . . . |
$$ | . . 2 1 . . . O . . . . X O X O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]