Life In 19x19

Life in 19x19. Go, Weiqi, Baduk... Thats the life.
https://lifein19x19.com/

126. EdLee vs Loons

https://lifein19x19.com/viewtopic.php?t=4026

Page 11 of 17

Posted: Wed Jul 20, 2011 3:50 pm
by EdLee
After :b2:, W also starts to feel heavy.
Click Here To Show Diagram Code
[go]$$W
$$---------------------
$$ . . . . . . . . . . |
$$ X . . . O X . . . . |
$$ . . X O O X O . . . |
$$ O . . O X X X O . . |
$$ . O . . O X X X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . X . . . . |
$$ , . . . . . , . . . |
$$ . . . . . . . 1 . . |
$$ . . . . . . 2 X . . |
$$ . . . . . . . . . . |
$$ . . . . . . X O X . |
$$ . . . . . . . X O . |
$$ , . . . X . X . O . |
$$ . . . O . . . O . . |
$$ . . . . . O . . . . |
$$ . . . . . . . . . . |
$$----------------------[/go]

Re: 126. EdLee vs Loons

Posted: Wed Jul 20, 2011 4:09 pm
by Loons
The reason my cap is jaunty:
Click Here To Show Diagram Code
[go]$$Bcm57 Prisoners: :w1:
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . a . . . . |
$$ | . . . . . . . X . . . . . . 1 . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X , . . . . . , . . . . . b . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]
Given the choice of gaps 'a' and 'b' to work with, there is no choice.

Click Here To Show Diagram Code
[go]$$Bcm57 Prisoners: :w1:
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . a . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . 1 . . . . |
$$ | . . X , . . . . . , . . . . . b . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]
Now, 'a' still isn't very attractive, and gap 'b' is a line smaller. As a flipside, attaching to :b57: is a little more interesting.

Posted: Thu Jul 21, 2011 12:43 am
by EdLee
Click Here To Show Diagram Code
[go]$$Wm58 Prisoners: :w1:
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 1 X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Posted: Thu Jul 21, 2011 12:55 am
by EdLee
There were too many variations for me. :oops: I couldn't find anything very good for W --
I probably missed something, but :b57: seems to be quite effective.
So let's try this and see what happens. :)
Click Here To Show Diagram Code
[go]$$Bm57
$$----------------------
$$ . . . . . . . . . . |
$$ X . . . O X . . . . |
$$ . . X O O X O . . . |
$$ O . . O X X X O . . |
$$ . O . . O X X X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . e . O . . |
$$ . . . . . 1 m . . . |
$$ , . . . . d b a . . |
$$ . . . . . . c k . . |
$$ . . . . . . . X . . |
$$ . . . . . . . . . . |
$$ . . . . . . X O X . |
$$ . . . . . . . X O . |[/go]

Re: 126. EdLee vs Loons

Posted: Thu Jul 21, 2011 1:54 am
by Loons
Click Here To Show Diagram Code
[go]$$Bcm59 Prisoners: :w1:
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 1 . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Oh, exciting. Only obvious response for me (I assume you agree). I hope white P12 doesn't work too well now.

Edit: Some variations while we wait.
Click Here To Show Diagram Code
[go]$$Bcm59 Prisoners: :w1: -- 'a' bad shape, and black can't really resist 'b'
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . a . . . |
$$ | . . . . . . . . . . . . . . . . 1 . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . b . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Click Here To Show Diagram Code
[go]$$Bcm59 Prisoners: :w1: -- I was briefly interested by this. It's as ridiculous/bad as it looks.
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . 1 . . . |
$$ | . . . . . . . . . . . . . . . b a . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . c . . |
$$ | . . O . . . . . . . . . . . . B O X . |
$$ | . . . . . . . . . . . . . . . . B O . |
$$ | . . . O . . . . . , . . . B . B . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Click Here To Show Diagram Code
[go]$$Bcm59 Prisoners: :w1: -- Solid on one side and too thin on the other.
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . 2 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . 1 . . |
$$ | . . O . . . . . . . . . . . . X C X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]


Game move variation(s):
Click Here To Show Diagram Code
[go]$$Bcm59 Prisoners: :w1: -- For reference.
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 1 . . . |
$$ | . . . . . . . . . . . . . . 7 C X 5 . |
$$ | . . . . . . . . . . . . . . . 3 2 4 . |
$$ | . . O . . . . . . . . . . . . X O C 6 |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Click Here To Show Diagram Code
[go]$$Bcm59 Prisoners: :w1: -- :w60: or threatening :w60: seems like a strong response.
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 1 2 . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]
Still under investigation. I was content because I couldn't see white crushing me locally somehow.

Posted: Thu Jul 21, 2011 1:59 am
by EdLee
First feeling is cross cut; before :w58: I had already read some of the variations of the cross cut,
but I'll study some more to make sure. Judging from Loons' response time, perhaps he also had anticipated :w58:
as a possibility before he played :b57:. Sleep now. :mrgreen:

Posted: Thu Jul 21, 2011 3:59 pm
by EdLee
A variation of :b59:: if :b1: pull-back, I might play :w2: -- seems this doesn't work for B:
Click Here To Show Diagram Code
[go]$$B
$$----------------------
$$ . . . . . . . . . . |
$$ X . . . O X . . . . |
$$ . . X O O X O . . . |
$$ O . . O X X X O . . |
$$ . O . . O X X X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . X . . . . |
$$ , . . . . . 2 . . . |
$$ . . . . . . . 1 . . |
$$ . . . . . . O X . . |
$$ . . . . . . . . . . |
$$ . . . . . . X O X . |
$$ . . . . . . . X O . |[/go]

Posted: Thu Jul 21, 2011 4:02 pm
by EdLee
Another variation of :b59:: if :b1: jump-back, I might still play :w2: -- after :w6:, it looks OK for W:
Click Here To Show Diagram Code
[go]$$B
$$----------------------
$$ . . . . . . . . . . |
$$ X . . . O X . . . . |
$$ . . X O O X O . . . |
$$ O . . O X X X O . . |
$$ . O . . O X X X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . X . . . . |
$$ , . . . . 6 2 1 . . |
$$ . . . . . 4 3 5 . . |
$$ . . . . . . O X . . |
$$ . . . . . . . . . . |
$$ . . . . . . X O X . |
$$ . . . . . . . X O . |[/go]

Posted: Thu Jul 21, 2011 6:27 pm
by EdLee
Click Here To Show Diagram Code
[go]$$Wm60 Prisoners: :w1:
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . 1 X . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Posted: Thu Jul 21, 2011 6:35 pm
by EdLee
I couldn't get the cross-cut to work. For example:
Click Here To Show Diagram Code
[go]$$W
$$----------------------
$$ . . . . . . . . . . |
$$ X . . . O X . . . . |
$$ . . X O O X O . . . |
$$ O . . O X X X O . . |
$$ . O . . O X X X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . X . . . . |
$$ , . . . . . . . . . |
$$ . . . . . . X 1 . . |
$$ . . . . . . O X . . |
$$ . . . . . . . 2 . . |
$$ . . . . . . X W X . |
$$ . . . . . . . X O . |
$$ . . . . X . X . O . |[/go]
Variation:
Click Here To Show Diagram Code
[go]$$W
$$----------------------
$$ . . . . . . . . . . |
$$ X . . . O X . . . . |
$$ . . X O O X O . . . |
$$ O . . O X X X O . . |
$$ . O . . O X X X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . X . . . . |
$$ , . . . . . . . . . |
$$ . . . . . . X 1 . . |
$$ . . . . . . O X 2 . |
$$ . . . . . . . . . . |
$$ . . . . . . X O X . |
$$ . . . . . . . X O . |
$$ . . . . X . X . O . |[/go]
Either way, the :w1: group cannot get out.

Re: 126. EdLee vs Loons

Posted: Thu Jul 21, 2011 8:22 pm
by Loons
Click Here To Show Diagram Code
[go]$$Bcm61 Prisoners: :w1: -- Seems nice for me? Maybe Ed feels there is sufficient aji to live under still?
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . 1 . . . |
$$ | . . . . . . . . . . . . . . O X . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wm60 Prisoners: :w1: -- I was just managing to psyche myself up for this.
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . 6 5 3 . . . |
$$ | . . . . . . . . . . . . . . 4 X 1 . . |
$$ | . . . . . . . . . . . . . . 2 O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Re: 126. EdLee vs Loons

Posted: Thu Jul 21, 2011 9:01 pm
by Loons
Click Here To Show Diagram Code
[go]$$Bcm61 Prisoners: :w1:
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . . . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . 1 . . . |
$$ | . . . . . . . . . . . . . . O X . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Well, I really want to see Ed's variation. He naturally expects this, so-.

Posted: Fri Jul 22, 2011 1:35 am
by EdLee
Pull-back at :bc: as expected. First feeling is of course :w1:, per previous analysis. But I'll double check first anyway.
Click Here To Show Diagram Code
[go]$$W
$$ -----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . X . . . O X . . . . |
$$ | . . . O X . X . O . . X O O X O . . . |
$$ | . . O O O . . . . O . . O X X X O . . |
$$ | . . X . . . 1 . . . O . . O X X X . . |
$$ | . . X O O . . X . . . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . X . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , . . . . . , . . . . . B . . . |
$$ | . . . . . . . . . . . . . . O X . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . O . . . . . , . . . X . X . O . |
$$ | . . O . . X . . X . . . O . . . O . . |
$$ | . . . X . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ -----------------------------------------[/go]

Posted: Fri Jul 22, 2011 2:08 am
by EdLee
(For beginners, probably?) Why :b61: could not be atari at (a) or (b) --
because W would immediately counter-atari at (c) and connect at (d),
resulting in a broken shape for B and a big loss in territory in this area for B.
Click Here To Show Diagram Code
[go]$$W
$$ ---------------
$$ . . . . . . . |
$$ . O X . . . . |
$$ O O X O . . . |
$$ O X X X O . . |
$$ . O X X X . . |
$$ . . . X . . . |
$$ . . . . . . . |
$$ . . . . O . . |
$$ . . X . . . . |
$$ . . d c . . . |
$$ . . O X . . . |
$$ . . a O X . . |
$$ . . . b . . . |
$$ . . . X O X . |
$$ . . . . X O . |
$$ . X . X . O . |[/go]

Posted: Fri Jul 22, 2011 2:13 am
by EdLee
If :b61: was instead connect at :b1:, then W might be able to
take advantage with :w2: :b3: first, before tenuki:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------
$$ . . . . . . . |
$$ . O X . . . . |
$$ O O X O . . . |
$$ O X X X O . . |
$$ . O X X X . . |
$$ . . . X . . . |
$$ . . . . . . . |
$$ . . . . O . . |
$$ . . X 3 . . . |
$$ . . 2 . . . . |
$$ . . O X 1 . . |
$$ . . . O X . . |
$$ . . . . . . . |
$$ . . . X O X . |
$$ . . . . X O . |
$$ . X . X . O . |[/go]
All times are UTC-07:00
Page 11 of 17

Powered by phpBB® Forum Software © phpBB Limited