[go]$$Bc 95B W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . W X X . . | $$ | . X X O O X Q X . B B W X . W W X . . | $$ | X X O X . X Q Q X O B . . a . X O . . | $$ | . O O X . . . Q . O B W W a . X X . . | $$ | . . O X . . X . Q . B W # @ @ @ @ . . | $$ | . . O X . . . . Q B B W # # # # c . . | $$ | . . O X . . . . Q . B B O O . . . . . | $$ | . X X O X . X . . Q Q Q b . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Lots of weakish groups here. Black must save the stones or lose the game. The question is how? It's probably possible to live in place with some sente moves against the top left and right, but that's for emergency use only. Ideally we want to live by killing a white group or gaining some other advantage.
I think the best possible outcome is we end up cutting at b and catching those two white stones while white struggles to live with both and / . Second best is if we kill . Third best (and it's not really good) is if we kill , but and connect up, making a big wall. Our corner would be huge but it wouldn't effect the rest of the game enough.
I'm not sure that Joaz's change was a good one. White still has major problems with the cutting point around a and now white cannot directly capture if black ignores it for one move. I won't be surprised if ShapeNaji changes it back. I think Joaz probably thought that Chew Terr's move would help black catch those two white stones in the middle.
If Joaz's move stands, I think the board is very promising for black.
_________________ That which can be destroyed by the truth should be. -- My (sadly neglected, but not forgotten) project: http://dailyjoseki.com
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shapenaji wrote:
Approved
I was kind of hoping that he wouldn't. It is a bad sign when one writes that there is only one possible way to stave off immediate defeat and one's big brother approves without comment.
[go]$$Bc 95B W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O . . X X 3 . | $$ | . . O X . . X . O . X O X O O O O 2 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . 4 . . | $$ | . X X O X . X . . O O O . . 1 , . . . | $$ | . O O O . . . . . . . . . . . 5 . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc 95B W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X 2 . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O . . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . 1 . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
and I anticipate that
The supposed placement at O15 no longer works like I envisioned a move or two back because the R14 group is now short of liberties.
The apparent options are making life at the top and (now that I look at the P10 diagram) taking a closer peep at whether the N10 cut is usable first.
_________________ So you've got an eye? That don't impress me much
[go]$$Bc 97A W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O . . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . 1 , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
I'm banking on this exchange being sente.
_________________ So you've got an eye? That don't impress me much
Posts: 2116 Location: Silicon Valley Liked others: 152 Was liked: 330
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OGS: daniel_the_smith
I just was curious to see more of your thought process, I wasn't going to respond to it... Hopefully that's ok... You don't have to respond, of course.
(For those who shouldn't read the hidden section, I asked Gresil to explain a statement he made in his hidden section...)
_________________ That which can be destroyed by the truth should be. -- My (sadly neglected, but not forgotten) project: http://dailyjoseki.com
[go]$$Bc 95B W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O . . X X 3 . | $$ | . . O X . . X . O . X O X O O O O 2 . | $$ | . . O X . . . . O X X O X X X X 1 . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
I saw that far. Because obviously forces and lets white continue with sente, I dismissed R12 as a totally obviously gote thank-you move. It didn't occur to me to examine what sort of a local continuation white has.
_________________ So you've got an eye? That don't impress me much
Posts: 5546 Location: Banbeck Vale Liked others: 1104 Was liked: 1457
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Gresil wrote:
Do the rules of BBM allow conversing with superiors?
You can say anything going up. He can can only say one of two things going down.
The general idea is that any player is not supposed to get any help from above. You can make a move, and argue at length about why it is good. But your big brother is limited to a binary reply: "approve" or "not approve" when replying to you. He can, of course, make any kind of comments to the observers and to his bigger brother.
[go]$$Bc 97B W45 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O . . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X B . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . C , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
I think we end up with some sort of capturing race with the original move:
[go]$$Bc 97A W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 0 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O 2 . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O 3 4 1 , . . . | $$ | . O O O . . . . . . . . 5 6 . . . . . | $$ | . . . . . X . . . X . . 7 8 . . . . . | $$ | . . . O . . . . . . . . 9 . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
White has at least 7 external liberties, black has 5 but can make an eye. But even if we win the race, our stones on the right side will most likely die.
With my move, that string of black stones is a lot closer to being able to handle itself, and we can get the first move at the top to prevent a capturing race.
[go]$$Bc 97A W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 3 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O 2 . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X 1 . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
I'm pretty sure this destroys white (a and b are miai), so white can't play here:
[go]$$Bc 97A W43 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . 3 a X O . . | $$ | . O O X . . . O . O X O O b . X X . . | $$ | . . O X . . X . O . X O X O O O O 2 . | $$ | . . O X . . . . O X X O X X X X 1 . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
_________________ That which can be destroyed by the truth should be. -- My (sadly neglected, but not forgotten) project: http://dailyjoseki.com
[go]$$Bc 97B W46 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O B . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X C . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . C , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . 2 . X O . . | $$ | . O O X . . . O . O X W W 1 . X X . . | $$ | . . O X . . X . O . X W X O O O O . . | $$ | . . O X . . . . O X X W X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Black, of course, must defend with 3, and that leaves our four stones hanging again, so we must play 4 like this:
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Now black has several variations with move 5: They can capture one of our groups with 5, but then we come back and kill a larger group with 6 like this:
[go]$$Bc First variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 6 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 5 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
A second possibility is like this: black will play 5 something like this below, and we respond with 6 which threatens 'a':
[go]$$Bc Second variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 5 . . O X X . . | $$ | . X X O O X O X . X X O X b O O X . . | $$ | X X O X . X O O X O X . 4 2 c X O a . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 6 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Black appears to be ahead on liberties, but 'c' is self-atari, while 'b' provokes us to defend with 'c', thereby gaining a tempo.
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 5 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X C 7 . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 6 . | $$ | . . O X . . . . O X X O X X X X 9 0 . | $$ | . . O X . . . . O . X X O O . 8 . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
...and black has two liberties while all the surrounding groups have 3+ liberties. Black dies in a ladder or a crane's nest.
A third possibility for move #5 is to shut off liberties a bit faster like this:
[go]$$Bc Third variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Now black would be ahead if white tried the sequence shown above, so white must play 6 like this:
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . c . 6 . . . . . | $$ | . X O O . O X X . . . a b . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
...which threatens 'a', 'b', and 'c'
So, black has to capture with 7, and then white has enough liberties to have two threats on the right side:
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . 6 . . . . . | $$ | . X O O . O X X . . . 7 . . O X X . . | $$ | . X X O O X O X . X X C X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O b . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 8 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . a . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
...and now white is threatening both 'a' and 'b'.
So, my analysis is that only the first variation of move 5 does not lead to big problems for black. Thus black has to continue like this:
[go]$$Bc First variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 6 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 5 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O 7 . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc Joaz's best guess of how the next 8 moves will go $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . O . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . O O . X O . . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O X . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . W . . . | $$ | . X X O X . X . . O O O X . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc 98A W46 B48 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O X . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X W . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Seems like an easy choice this time, though our opponent's last move was good. This move is very sente and helps a group that needs it. Black will have to extend (or capture the sacrificed stones at M14). We can then extend again in sente or connect our two white groups in sente. After that, if our group is cut off, we'll have to figure out life... may as well take any forcing moves we can to make it easier.
_________________ Someday I want to be strong enough to earn KGS[-].
[go]$$Bc Second variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 5 . . O X X . . | $$ | . X X O O X O X . X X O X b O O X . . | $$ | X X O X . X O O X O X . 4 2 c X O a . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 6 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . b . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
This looks really good, (a and b are miai) but it's also complicated... and branches a lot, as Joaz discovered.
[go]$$Wc Second variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . X . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . O O . X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X 2 3 . | $$ | . . O X . . . . O . X X O O 8 1 4 6 . | $$ | . X X O X . X . . O O O . . 9 , 5 7 . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
I'm having trouble deciding whether to go with this, OR, along Chew Terr's logic:
[go]$$Bc 7 fills $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . 3 4 X O 5 . | $$ | . O O X . . . O . O X O O 1 2 X X 6 . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . 8 . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Which gives up the four stones nicely and gets incredible outside thickness, As cool looking as the first one is, the second one is so straightforward, and so solid, that I think it's better
[go]$$Bc 98B W46 B50 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . W . X O . . | $$ | . O O X . . . O . O X O O X . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X C . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
As indicated in my two previous posts on the subject, these stones are essential:
[go]$$Bc 98B $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . O . X O . . | $$ | . O O X . . . O . O X @ @ X . X X . . | $$ | . . O X . . X . O . X @ X O O O O . . | $$ | . . O X . . . . O X X @ X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
And inviting these stones to expand southward like this:
[go]$$Wc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O X . X X . . | $$ | . . O X . . X . O . X O # O O O O . . | $$ | . . O X . . . . O X X O # # # # 1 . . | $$ | . . O X . . . . O . X X O O . 2 . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . . . X O . . | $$ | . O O X . . . O . O X O O X . X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X @ @ . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . O . X O . . | $$ | . O O X . . . O . O X O O X . X X . . | $$ | . . O X . . X . O . X O X @ @ @ @ . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O a . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Those four stones are just decoys to keep black busy. The real fight will be about 'a'.
BTW, I think that N16 was an overplay. It should have been at M17.
I should know better than this, the other sequence I laid out was simple, but I just can't back down from this position, I feel white is better off in this fight, to back down just smacks of cowardice, and cowardice never made anyone better at this game
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . . 2 . X O . . | $$ | . O O X . . . O . O X W W 1 . X X . . | $$ | . . O X . . X . O . X W X O O O O . . | $$ | . . O X . . . . O X X W X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Black, of course, must defend with 3, and that leaves our four stones hanging again, so we must play 4 like this:
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Now black has several variations with move 5: They can capture one of our groups with 5, but then we come back and kill a larger group with 6 like this:
[go]$$Bc First variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 6 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 5 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
A second possibility is like this: black will play 5 something like this below, and we respond with 6 which threatens 'a':
[go]$$Bc Second variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 5 . . O X X . . | $$ | . X X O O X O X . X X O X b O O X . . | $$ | X X O X . X O O X O X . 4 2 c X O a . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 6 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Black appears to be ahead on liberties, but 'c' is self-atari, while 'b' provokes us to defend with 'c', thereby gaining a tempo.
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 5 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X C 7 . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 6 . | $$ | . . O X . . . . O X X O X X X X 9 0 . | $$ | . . O X . . . . O . X X O O . 8 . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
...and black has two liberties while all the surrounding groups have 3+ liberties. Black dies in a ladder or a crane's nest.
A third possibility for move #5 is to shut off liberties a bit faster like this:
[go]$$Bc Third variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . . . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Now black would be ahead if white tried the sequence shown above, so white must play 6 like this:
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . c . 6 . . . . . | $$ | . X O O . O X X . . . a b . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O . . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
...which threatens 'a', 'b', and 'c'
So, black has to capture with 7, and then white has enough liberties to have two threats on the right side:
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . 6 . . . . . | $$ | . X O O . O X X . . . 7 . . O X X . . | $$ | . X X O O X O X . X X C X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O b . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 8 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . a . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
...and now white is threatening both 'a' and 'b'.
So, my analysis is that only the first variation of move 5 does not lead to big problems for black. Thus black has to continue like this:
[go]$$Bc First variation on move 5 $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . 6 . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . 4 2 . X O . . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 5 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . . . . | $$ | . X X O X . X . . O O O 7 . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc Joaz's best guess of how the next 8 moves will go $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . . . . . . . | $$ | . X O O . O X X . . . O . . O X X . . | $$ | . X X O O X O X . X X O X . O O X . . | $$ | X X O X . X O O X O X . O O . X O . . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O X . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . W . . . | $$ | . X X O X . X . . O O O X . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . 6 . . . . . | $$ | . X O O . O X X . . . 7 . . O X X . . | $$ | . X X O O X O X . X X C X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O b . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 8 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . a . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . 5 O 3 . . . . | $$ | . X O O . O X X . . . X . 4 O X X . . | $$ | . X X O O X O X . X X . X 2 O O X . . | $$ | X X O X . X O O X O X X O O 1 X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Wc $$ --------------------------------------- $$ | . . . . . . . O . . . . 6 . 3 . . . . | $$ | . X X O O . O X . . . . X O X 1 4 . . | $$ | . X O O . O X X . . . X 2 O O X X . . | $$ | . X X O O X O X . X X . X O O O X . . | $$ | X X O X . X O O X O X X O O X X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X 5 . . | $$ | . . O X . . . . O . X X O O 7 . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
Is there something that doesn't work about this for White?
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . 9 5 8 . . . . | $$ | . X X O O . O X . . . . 7 O 3 6 . . . | $$ | . X O O . O X X . . . X . 4 O X X . . | $$ | . X X O O X O X . X X . X 2 O O X . . | $$ | X X O X . X O O X O X X O O 1 X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . 6 5 8 . . . . | $$ | . X X O O . O X . . . . 7 O 3 9 . . . | $$ | . X O O . O X X . . . X . 4 O X X . . | $$ | . X X O O X O X . X X . X 2 O O X . . | $$ | X X O X . X O O X O X X O O 1 X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Wc a and b are miai? $$ --------------------------------------- $$ | . . . . . . b O 4 . a 1 O 3 O . . . . | $$ | . X X O O . O X . . . . X O X X . . . | $$ | . X O O . O X X . . . X 2 O O X X . . | $$ | . X X O O X O X . X X . X O O O X . . | $$ | X X O X . X O O X O X X O O X X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . 9 5 . . . . . | $$ | . X X O O . O X . . . 7 6 O 3 8 . . . | $$ | . X O O . O X X . . . X . 4 O X X . . | $$ | . X X O O X O X . X X . X 2 O O X . . | $$ | X X O X . X O O X O X X O O 1 X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
White looks a liberty behind in all of these... for example, on the first one:
[go]$$Wc $$ --------------------------------------- $$ | . . . . . . . O . . . . X X O . . . . | $$ | . X X O O . O X . . . . X O 3 O 4 . . | $$ | . X O O . O X X . . . X 2 O O X X . . | $$ | . X X O O X O X . X X . X O O O X . . | $$ | X X O X . X O O X O X X O O X X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O 1 . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Wc $$ --------------------------------------- $$ | . . . . . . . O . . . . X X O . 6 . . | $$ | . X X O O . O X . . . . X O 3 O 1 4 . | $$ | . X O O . O X X . . . X 2 O O X X . . | $$ | . X X O O X O X . X X . X O O O X . . | $$ | X X O X . X O O X O X X O O X X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O 5 . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . . . . . . . | $$ | . X X O O . O X . . . . . 6 . . . . . | $$ | . X O O . O X X . . . 7 . . O X X . . | $$ | . X X O O X O X . X X . X . O O X . . | $$ | X X O X . X O O X O X 5 4 2 . X O 9 . | $$ | . O O X . . . O . O X O O 1 3 X X . . | $$ | . . O X . . X . O . X O X O O O O 8 . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . 0 . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . O . . . . . 5 . . . . . | $$ | . X X O O . O X . . . . . O 3 . . . . | $$ | . X O O . O X X . . . X . 4 O X X . . | $$ | . X X O O X O X . X X . X 2 O O X . . | $$ | X X O X . X O O X O X X O O 1 X . X . | $$ | . O O X . . . O . O X O O X X X X . . | $$ | . . O X . . X . O . X O X O O O O O . | $$ | . . O X . . . . O X X O X X X X . . . | $$ | . . O X . . . . O . X X O O . . O . . | $$ | . X X O X . X . . O O O . . . , . . . | $$ | . O O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . X . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . , . O . . . , . . . . . O . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]
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daniel_the_smith
stones or lose the game. The question is how? It's probably possible to live in place with some sente moves against the top left and right, but that's for emergency use only. Ideally we want to live by killing a white group or gaining some other advantage.
and 
/ 
. Second best is if we kill 
if black ignores it for one move. I won't be surprised if ShapeNaji changes it back. I think Joaz probably thought that Chew Terr's move would help black catch those two white stones in the middle.
obviously forces 
and lets white continue with sente, I dismissed R12 as a totally obviously gote thank-you move. It didn't occur to me to examine what sort of a local continuation white has.
