Interesting situation from a recent game

tj86430 · Post by **tj86430** » Sat Jan 29, 2011 7:47 am

I just came across this situation:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X . | $$ . . O X X O . | $$ . X O X O O O | $$ . X X O O . O | $$ . O O X O . O | $$ . . X X O O X | $$ . . . O X O X | $$ . . . . X X X | $$ . . . . . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

Black to play, can he capture?

illluck · Post by **illluck** » Sat Jan 29, 2011 9:11 am

T16, I don't see why not?

tj86430 · Post by **tj86430** » Sat Jan 29, 2011 9:30 am

That's what I played. White responded:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X 1 | $$ . . O X X O . | $$ . X O X O O O | $$ . X X O O . O | $$ . O O X O . O | $$ . . X X O O X | $$ . . . O X O X | $$ . . . 2 X X X | $$ . . . . . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

illluck · Post by **illluck** » Sat Jan 29, 2011 9:38 am

Yes, that's one of the trickier responses, but I think black is fine.

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X 1 | $$ . . O X X O . | $$ . X O X O O O | $$ . X X O O . O | $$ . O O X O . O | $$ . . X X O O X | $$ . . . O X O X | $$ . . . 2 X X X | $$ . . . 3 . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

Edit:

I guess this is the most tricky sequence:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . 0 . . | $$ . . O O X . . | $$ . O 8 X X X 1 | $$ 9 7 O X X O . | $$ 6 X O X O O O | $$ . X X O O . O | $$ 4 O O X O . O | $$ . . X X O O X | $$ . . . O X O X | $$ . . 5 2 X X X | $$ . . . 3 . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

Then:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . 0 4 2 b | $$ . . 6 5 O 1 3 | $$ . . O O X 8 9 | $$ . O O X X X X | $$ X X O X X O 7 | $$ O X O X O O O | $$ . X X O O a O | $$ O O O X O c O | $$ . . X X O O X | $$ . . . O X O X | $$ . . X O X X X | $$ . . . X . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

Black one lib ahead, though I admit I probably won't read this out in a normal game.

Marcus · Post by **Marcus** » Sat Jan 29, 2011 10:52 am

I'd say it depends on ladders:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X 1 | $$ . . O X X O . | $$ . B O X O O O | $$ . B B O O . O | $$ . O O B O . O | $$ . . B B O O X | $$ . . . O X O X | $$ . . . . X X X | $$ . . . . . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

It may be possible for White to use the aji around the marked black stones to make a ladder.

My first thought for White was this:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X 1 | $$ . . O X X O . | $$ . B O X O O O | $$ . B B O O . O | $$ . O O B O . O | $$ . 2 B B O O B | $$ . . 3 O B O B | $$ . . a 4 B B B | $$ . . . . . . . | $$ . . . . . . . | $$ . X . X . . . |[/go]

This looks pretty dangerous for Black's T9 group, and White is threatening a good ladder at a.

Obviously, this is just a quick glance.

illluck · Post by **illluck** » Sat Jan 29, 2011 12:21 pm

Marcus's post was the reason why I didn't post diagrams at first - I'm relatively certain I read all resistances by white out, but there were too many diagrams for me to post :p

Q8 is fine for Marcus's variation too - I think the variation I posted was the most difficult resistance by white.

CSamurai · Post by **CSamurai** » Mon Jan 31, 2011 12:32 am

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X 1 | $$ . . O X X O . | $$ . X O X O O O | $$ . X X O O . O | $$ . O O X O . O | $$ . 5 X X O O X | $$ . 4 . O X O X | $$ . . . 2 X X X | $$ . . . 3 6 7 . | $$ . . . . 8 9 . | $$ . X . X 0 . . |[/go]

I think.. I think a lot depends on the status of the lower corner?

After 4, white's 2 stones are harder to lean on than in illuck's diagram, and black's 3 liberty group becomes dangerously short. 6 seizes the opportunity to counter attack, but if there's already stones in this corner, it changes a lot about the nature of this problem.

tj86430 · Post by **tj86430** » Mon Jan 31, 2011 12:59 am

In the game the lower corner looked like this:

Click Here To Show Diagram Code: [go]$$Bc $$ ------------------- $$ . . . . . . . | $$ . . . . . . . | $$ . . O O X . . | $$ . O . X X X . | $$ . . O X X O . | $$ . X O X O O O | $$ . X X O O . O | $$ . O O X O . O | $$ . . X X O O X | $$ . . . O X O X | $$ . . . . X X X | $$ . . . . . . . | $$ . . . . . . . | $$ . X . X . . . | $$ . . . . . . . | $$ . O . X X . . | $$ . . O O X . . | $$ . . . . . . . | $$ . . . . . . . | $$ -------------------[/go]

CSamurai · Post by **CSamurai** » Sun Feb 06, 2011 9:40 pm

Ah, yeah, then white's boned.

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