A few moves ago I mentioned the idea of keeping our center group safe ( well, sort of safe ) by keeping their upper center group short on eyes. That is still important. Indeed it may be twice as important now, since we have a new group that does not clearly have eyes. I would like to reduce them to one eye in sente.
$$Wc gote for us
$$ ---------------------------------------
$$ | . . . . . . 5 O 4 . . . . . . . . . . |
$$ | . X X O O . O X 6 3 7 . . . . . . . . |
$$ | . X O O . O X X . 2 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc gote for us
$$ ---------------------------------------
$$ | . . . . . . 5 O 4 . . . . . . . . . . |
$$ | . X X O O . O X 6 3 7 . . . . . . . . |
$$ | . X O O . O X X . 2 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc also gote for us
$$ ---------------------------------------
$$ | . . . . . . 5 O 4 . . . . . . . . . . |
$$ | . X X O O . O X . 6 3 . . . . . . . . |
$$ | . X O O . O X X . 2 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc also gote for us
$$ ---------------------------------------
$$ | . . . . . . 5 O 4 . . . . . . . . . . |
$$ | . X X O O . O X . 6 3 . . . . . . . . |
$$ | . X O O . O X X . 2 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc no eyes, bad for them, 2 is premature
$$ ---------------------------------------
$$ | . . . . . . 3 O 2 . . . . . . . . . . |
$$ | . X X O O . O X . 4 . . . . . . . . . |
$$ | . X O O . O X X . 5 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc no eyes, bad for them, 2 is premature
$$ ---------------------------------------
$$ | . . . . . . 3 O 2 . . . . . . . . . . |
$$ | . X X O O . O X . 4 . . . . . . . . . |
$$ | . X O O . O X X . 5 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc can't do, they have too many ko threats
$$ ---------------------------------------
$$ | . . . . . . . O . 7 . . . . . . . . . |
$$ | . X X O O . O X 3 4 5 . . . . . . . . |
$$ | . X O O . O X X 6 2 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc can't do, they have too many ko threats
$$ ---------------------------------------
$$ | . . . . . . . O . 7 . . . . . . . . . |
$$ | . X X O O . O X 3 4 5 . . . . . . . . |
$$ | . X O O . O X X 6 2 1 . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc gote again
$$ ---------------------------------------
$$ | . . . . . . 9 O 8 . . . . . . . . . . |
$$ | . X X O O . O X 3 4 7 . . . . . . . . |
$$ | . X O O . O X X 5 2 1 . . . O X . . . |
$$ | . X X O O X O X 6 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc gote again
$$ ---------------------------------------
$$ | . . . . . . 9 O 8 . . . . . . . . . . |
$$ | . X X O O . O X 3 4 7 . . . . . . . . |
$$ | . X O O . O X X 5 2 1 . . . O X . . . |
$$ | . X X O O X O X 6 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc we connect, so they won't play 2
$$ ---------------------------------------
$$ | . . . . . . . O . 3 . . . . . . . . . |
$$ | . X X O O . O X 5 2 1 . . . . . . . . |
$$ | . X O O . O X X . 6 4 7 . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc we connect, so they won't play 2
$$ ---------------------------------------
$$ | . . . . . . . O . 3 . . . . . . . . . |
$$ | . X X O O . O X 5 2 1 . . . . . . . . |
$$ | . X O O . O X X . 6 4 7 . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc gote for us
$$ ---------------------------------------
$$ | . . . . . . 3 O 2 . . . . . . . . . . |
$$ | . X X O O . O X . 4 1 7 . . . . . . . |
$$ | . X O O . O X X 5 6 . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc gote for us
$$ ---------------------------------------
$$ | . . . . . . 3 O 2 . . . . . . . . . . |
$$ | . X X O O . O X . 4 1 7 . . . . . . . |
$$ | . X O O . O X X 5 6 . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
Playing the atari at J19 - which threatens to start a ko for the life of our upper left group - always seems to be their saving move to make us finish in gote. So, if there is a sequence that reduces them to one eye while maintaining sente, it has to start like this:
$$Wc
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . . . . . . . . . . |
$$ | . X O O . O X X . . . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . . . . . . . . . . |
$$ | . X O O . O X X . . . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc we connect
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . 3 . . . . . . . . |
$$ | . X O O . O X X . 2 . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc we connect
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . 3 . . . . . . . . |
$$ | . X O O . O X X . 2 . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc zero eyes in gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 2 . 5 . . . . . . . |
$$ | . X O O . O X X 3 . . . . . O X . . . |
$$ | . X X O O X O X 4 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
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[go]$$Wc zero eyes in gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 2 . 5 . . . . . . . |
$$ | . X O O . O X X 3 . . . . . O X . . . |
$$ | . X X O O X O X 4 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc zero eyes in gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . . . . . . . . . . |
$$ | . X O O . O X X 3 . 2 5 . . O X . . . |
$$ | . X X O O X O X 4 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$Wc zero eyes in gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . . . . . . . . . . |
$$ | . X O O . O X X 3 . 2 5 . . O X . . . |
$$ | . X X O O X O X 4 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
$$Wc zero eyes gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . 4 7 . . . . . . . |
$$ | . X O O . O X X 5 . 2 3 . . O X . . . |
$$ | . X X O O X O X 6 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$Wc zero eyes gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X 1 . 4 7 . . . . . . . |
$$ | . X O O . O X X 5 . 2 3 . . O X . . . |
$$ | . X X O O X O X 6 X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
It appears that we can't be sure of finishing with sente. Black will happily trade all of his eye space for the opportunity to connect around us and lock us in like this:
$$Wc zero eyes but gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X O . X O . . . . . . . |
$$ | . X O O . O X X O . X O . . O X . . . |
$$ | . X X O O X O X X X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . B . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$Wc zero eyes but gote
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X O . X O . . . . . . . |
$$ | . X O O . O X X O . X O . . O X . . . |
$$ | . X X O O X O X X X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . B . . X . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . O . . . . . . . . . . |[/go]
So first, before going after the upper center black group's eyes, we have to get out. Therefore I'm inclined to reject younger brother's move and extend southward.
Also, to take advantage of any cutting weaknesses of black's most recent keima, we have to be able to attack the piece after we cut it off. This doesn't work if it has an easy connection westward.
$$Wc
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X . . . . . . . . . . . |
$$ | . X O O . O X X . . . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . B . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . 1 . . |
$$ | . . O X . . . . O . . . . . . . . . . |
$${AR P14 N14}
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[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . X X O O . O X . . . . . . . . . . . |
$$ | . X O O . O X X . . . . . . O X . . . |
$$ | . X X O O X O X . X . O . . O , X . . |
$$ | X X O X . X O O X . . . . . . . . . . |
$$ | . O O X . . . O . . X . . . . B . . . |
$$ | . . O X . . X . O . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . 1 . . |
$$ | . . O X . . . . O . . . . . . . . . . |
$${AR P14 N14}[/go]
Yeah...after looking at that, I conclude that we MUST push out. But I'm not yet sure where. N14 is the current top candidate.