I think this is a good position to analyze using tewari. After a sequence, I have to look if the marked exchange is good for me or not:
- Click Here To Show Diagram Code
[go]$$Bcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . e . . . . . . . . . . . . . O . . |
$$ | . . d . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X g . . . . . . . . . . O . O . . |
$$ | . b c . . . . . . . . . . . . . . . . |
$$ | . . f O . a . . . Y . . . . . , X . . |
$$ | . . . . . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
Things I thought about were a, b, c, d, e, f, g, and tenuki
First, tenuki:
- Click Here To Show Diagram Code
[go]$$Bcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . d . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . O . O . . |
$$ | . 6 8 . . . . . . . . . . . . . . . . |
$$ | . 5 2 O 4 . a . . Y . . . . . , X . . |
$$ | . 7 1 3 . b . Q . . . . . . . X . . . |
$$ | . . . . . 9 c . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
I think if I tenuki, black will enter the corner and there's no nice way to take sente for me. Y is already reducing my influence, and Q is in a weird position, so it can be cut off with a (Y and Q are the marked stones). If I exchange b for c it can still be cutt off, so no way to take sente here. If I don't take sente, he will play something like d and my wall will look like a fool. For some new thoughts, see the pincervariations.
second option, a:
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . c . . . . . , . . . . . , . . . |
$$ | . . b . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . O . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . a . O . 1 . . . Y . . . . . , X . . |
$$ | . . . . . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
After this, I think he has 2 options. If he plays further then b, I will invade immediately. If he plays b, I will kosumi-attach in the corner and make him overconcentrated. If he plays high instead, on c, I think I will tenuki. If he plays a I'll just play sansan.
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . 4 . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . O . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . 2 . O . 1 . . . 6 . . . . . , X . . |
$$ | . . 3 . . . . 7 . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
5 Is played elsewhere. The exchange of 6 for 7 is neutral now I think, maybe slightly better for me, since 6 is in a weird place. It's still very light and preventing me from making good shape on k3 though.
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . 2 . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X 4 . . . . . . . . . . O . O . . |
$$ | . . 3 . . . . . . . . . . . . . . . . |
$$ | . . . O . 1 . . . 6 . . . . . , X . . |
$$ | . . . . . . . 7 . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
5 Is played elsewhere. In this case, the exchange of 6 for 7 is good for me, because it takes away a LOT of the aji in the corner.
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . 2 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X c . . . . . . . . . . O . O . . |
$$ | . . b . . . . . . . . . . . . . . . . |
$$ | . a . O . 1 . . . 4 . . . . . , X . . |
$$ | . . . . . . . 5 . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
3 is played elsewhere. In this case, I wouldn't know which is better. 4 is at a weird place, should be at 5 if he wants to attack, but 5 is maybe better at a. He can still enter my corner at 3-3 now and make my position look silly.
Another possibility for me is to play 3 at b, let him play c and tenuki. In that case, 4 for 5 is good for me. But black has nice shape on the left. This is also what would happen if I would play b first (option c in the first diagram). Conclusion: 1 is a possible move, and can't be bad for me.
option b:
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . b . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . c . . . . . . . . . . . . . . . |
$$ | . a X . . . . . . . . . . . O . O . . |
$$ | . 1 . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . Y . . . . . , X . . |
$$ | . . . . . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
I think he has 2 options, at a and b. If he plays b, c will be disadvantegeous for me because of the marked exchange, so I will probably just play a and not worry about the invasion at f3, because I can fight hard, and he has a lot of unsettled groups still. So I think he will play a:
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . 6 , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . 2 X . 4 . . . . . . . . . O . O . . |
$$ | . 1 3 . . . . . . . . . . . . . . . . |
$$ | . . . O . 5 . . . Y . . . . . , X . . |
$$ | . . . . x . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
I think the marked exchange is now slightly good for me, because there was some aji at x if he would have approached later. I can also think about playing like this, but I dislike it:
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . 3 . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . 2 X . a . . . . . . . . . O . O . . |
$$ | . 1 6 . . . . . . . . . . . . . . . . |
$$ | . . 4 O 8 . . . . Y . . . . . , X . . |
$$ | . 7 5 9 . b . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
He will probably play a and I will play b. This feels too cramped, I'm totally pressed flat, where my marked stone was already low.
I already discussed c in a previous diagram, so I will look at options d/e now. Which will be basically the same, I think. I will discuss e, because I like the position better.
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . 1 . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . O . O . . |
$$ | . 7 9 . . . . . . . . . . . . . . . . |
$$ | . 6 3 O 5 . . . . Y . . . . . , X . . |
$$ | . 8 2 4 . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . x . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . Q . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . O . O . . |
$$ | . O 1 . . . . . . . . . . . . . . . . |
$$ | . X O O O . 3 . . 4 . . . . . , X . . |
$$ | . X X X . . . 5 . . . . . . . X . . . |
$$ | . . . . . 2 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
This reverts back to the tenuki diagram, but now the 'tenuki' would be the marked stone. Also, some new thoughts arise here. If I just play 3 here, then analyse the situation with tewari again, 4 for 5 seems a ridiculous exchange for black. I don't like this, because I get gote though. I think he will play something like x now.
edit: In the tenukivariation, I regret what I said, this should just be good for me with the 4-5 exchange. I regret not playing like this. (1 minute after I played)
Option f would result in a position like this:
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . 2 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . O . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 O . . . . . Y . . . . . , X . . |
$$ | . . . . . . a Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
Using tewari here would be too ridiculous, but I'd rather have my marked stone at a, it feels like there is a lot of aji in the corner.
Finally, the last one, option g:
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . . . . . . . . . . . |
$$ | . . X 1 a . . . . . . . . . O . O . . |
$$ | . . b . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . Y . . . . . , X . . |
$$ | . . . . . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
I can play a or b here.
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . 8 . 2 b . . . . . . . . . . . . . . |
$$ | . . X 1 3 . . . . . . . . . O . O . . |
$$ | . 6 5 7 . . . . . . . . . . . . . . . |
$$ | . a 4 O . . . . . Y . . . . . , X . . |
$$ | . . 9 . . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
Normally, after black plays a, white plays b. But because of the marked exchange b looks like just pushing from behind. So I think white's shape here is bad.
- Click Here To Show Diagram Code
[go]$$Wcm1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 8 . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 6 . . . . . . . . . . . . . . |
$$ | . . X 1 4 . . . . . . . . . O . O . . |
$$ | . . 3 5 . . . . . . . . . . . . . . . |
$$ | . . . O . 7 . . . Y . . . . . , X . . |
$$ | . . . . . . . Q . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
I don't know about the placement of 8, it can be somewhere else. The marked exchange is neutral now, so I just dislike this joseki because of it's vulgarity, making black thick.
This leaves options a and b. I think I will play a, because he can make a mistake, and because he won't get as thick as when I play b.