44 appears to be double sente for W. however, I was slightly surprised to see white play it immediately. There are two reasons for my surprise:
- Click Here To Show Diagram Code
[go]$$c
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . O X X X X X X X 5 . |
$$ | . . . O O . O . O . O O X O O . O . . |
$$ | . O X O X O . . . O . . O . O . O . . |
$$ | . O O X X X X X X . . . . O O X X O . |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ | . . X X . . O O O . . . . O O O X . . |
$$ | . O O X O O . . . . . . . . O X . . . |
$$ | . . X O X X X X X O . . O . 3 X . . . |
$$ | . . X . . . . . O . . . . . . . . . . |
$$ | . . . X O . X . . . . . . . . . X . . |
$$ | . . . . . O O . . . . X . . . . . . . |
$$ | . X X X X X O . O . O O 1 X . . . . . |
$$ | X O O X X O . . . . . X . X . X . . . |
$$ | . O . O X O . O . , . X X O X , . . . |
$$ | . O . O X O X . . O . O O O X . . . . |
$$ | . . O O X X . O . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Black 3 becomes powerful after W 44. Also, if B gets to descend at 5, my yose improves a bit as a result of having captured the single stone, for example:
- Click Here To Show Diagram Code
[go]$$c
$$ ---------------------------------------
$$ | 2 . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . O X X X X X X X 1 9 |
$$ | . . . O O . O . O . O O X O O 4 O 6 8 |
$$ | . O X O X O . . . O . . O . O 3 O 5 . |
$$ | . O O X X X X X X . . . . O O X X O 7 |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ ---------------------------------------[/go]
9 is my sente here.
So W may choose to make this exchange in sente quite soon:
- Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | 3 . . . . . . . 8 6 2 . . . . . . . . |
$$ | . . . . . a 9 4 7 O X X X X X X X 1 . |
$$ | . . . O O . O 5 O . O O X O O . O . . |
$$ | . O X O X O . . . O . . O . O . O . . |
$$ | . O O X X X X X X . . . . O O X X O . |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ ---------------------------------------[/go]
However, this exchange improve my yose on the top side as shown.If W neglects to play some of these move, the peep at a becomes big for me.
I expect W will continue as here:
- Click Here To Show Diagram Code
[go]$$c
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . O X X X X X X X . . |
$$ | . . . O O . O . O . O O X O O . O . . |
$$ | . O X O X O . . . O . . O . O , O . . |
$$ | . O O X X X X X X . . . . O O X X O . |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ | . . X X . . O O O . . . . O O O X . . |
$$ | . O O X O O . . 5 3 6 . . . O X . . . |
$$ | . . X O X X X X X O 4 . O . 2 X . . . |
$$ | . . X . . . . . O . . . . . . . . . . |
$$ | . . . X O . X . . . . . . . . . X . . |
$$ | . . . . . O O . . . . X a . . . . . . |
$$ | . X X X X X O . O . O O 1 X . . . . . |
$$ | X O O X X O . . . . . X . X . X . . . |
$$ | . O . O X O . O . , . X X O X , . . . |
$$ | . O . O X O X . . O . O O O X . . . . |
$$ | . . O O X X . O . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
2 is nearly double sente - it looks like it activates a cut at a. I intend to play at 3. There are lots of choices for W, but if it goes as shown I believe that I have a slight lead.
W can't play actually play the cut I pointed out:
- Click Here To Show Diagram Code
[go]$$c
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . O X X X X X X X . . |
$$ | . . . O O . O . O . O O X O O . O . . |
$$ | . O X O X O . . . O . . O . O , O . . |
$$ | . O O X X X X X X . . . . O O X X O . |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ | . . X X . . O O O . . . . O O O X . . |
$$ | . O O X O O . . . 3 . . . . O X . . . |
$$ | . . X O X X X X X O . . O . 2 X . . . |
$$ | . . X . . . . . O . . . . . . . . . . |
$$ | . . . X O . X . . . . . 6 . . . X . . |
$$ | . . . . . O O . . . 5 X 4 . . . . . . |
$$ | . X X X X X O . O 7 O O 1 X . . . . . |
$$ | X O O X X O . . . 0 8 X . X . X . . . |
$$ | . O . O X O . O . , 9 X X O X , . . . |
$$ | . O . O X O X . . O . O O O X . . . . |
$$ | . . O O X X . O . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
5 threatens a geta, so forces 6. Then after 9 nasty things will happen on the lower side to W.
- Click Here To Show Diagram Code
[go]$$c
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . O X X X X X X X . . |
$$ | . . . O O . O . O . O O X O O . O . . |
$$ | . O X O X O . . . O . . O . O , O . . |
$$ | . O O X X X X X X . . . . O O X X O . |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ | . . X X . . O O O . . . . O O O X . . |
$$ | . O O X O O . . . X . . . . O X . . . |
$$ | . . X O X X X X X O . . O . O X . . . |
$$ | . . X . . . . . O . . . . . . . . . . |
$$ | . . . X O . X . . . . . O . . . X . . |
$$ | . . . . . O O . . . X X O . . . . . . |
$$ | . X X X X X O . O X O O X X . . . . . |
$$ | X O O X X O . . 2 O X X . X . X . . . |
$$ | . O . O X O . O . 1 X X X O X , . . . |
$$ | . O . O X O X . . O 3 O O O X . . . . |
$$ | . . O O X X . O . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Finally, here is an laternative for W for in the main variant:
- Click Here To Show Diagram Code
[go]$$c
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . O X X X X X X X . . |
$$ | . . . O O . O . O . O O X O O . O . . |
$$ | . O X O X O . . . O . . O . O , O . . |
$$ | . O O X X X X X X . . . . O O X X O . |
$$ | O X X . X . O O X X X X X O X . X X . |
$$ | . O . X . X O . O . O O O X X X . . . |
$$ | . . X X . . O O O . . . . O O O X . . |
$$ | . O O X O O . . 4 3 . . . . O X . . . |
$$ | . . X O X X X X X O 5 . O . 2 X . . . |
$$ | . . X . . . . . O 6 7 . . . . . . . . |
$$ | . . . X O . X . . . . . . . . . X . . |
$$ | . . . . . O O . . . . X a . . . . . . |
$$ | . X X X X X O . O . O O 1 X . . . . . |
$$ | X O O X X O . . . . . X . X . X . . . |
$$ | . O . O X O . O . , . X X O X , . . . |
$$ | . O . O X O X . . O . O O O X . . . . |
$$ | . . O O X X . O . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
B 5 and 7 as here work OK if W cuts.
I mentioned the cut at 3 as a move to play instead of 41. I reject this because, at that time, W reply with a nobi as in the main diagram (5 above) worked well for him. Now I hve extra stones in the area, W's territory from the nobi is smaller so it looks like better timing for me.