$$ $$ -------------------- $$ | . . . O . . . . . . $$ | . . O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . . . O . . . . . . $$ | . . O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
This happened in my latest game against an 5k on tygem. White was careless and connected at . Black to play and win something.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 12:20 pm
by Kirby
$$ $$ -------------------- $$ | . 7 . O . . . . . . $$ | 5 3 O 2 O X X . . . $$ | 4 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 6 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . 7 . O . . . . . . $$ | 5 3 O 2 O X X . . . $$ | 4 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 6 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
Re: I love this tesuji
Posted: Wed Jul 20, 2011 12:25 pm
by lorill
@kirby: 5 is useless, but that's it.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 12:27 pm
by Kirby
lorill wrote:@kirby: 5 is useless, but that's it.
5 is worth a point, no? If white plays there, black doesn't get the point in the corner.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 12:34 pm
by lorill
Oh right, even more than one point, as black doesn't need to capture there. So, 4 points if i count well.
I missed that, thanks!
Re: I love this tesuji
Posted: Wed Jul 20, 2011 12:57 pm
by Kirby
lorill wrote:Oh right, even more than one point, as black doesn't need to capture there. So, 4 points if i count well.
I missed that, thanks!
Ah, hahaha. It is worth more than one point, isn't it?
Thanks for pointing that out.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 1:01 pm
by Numsgil
$$ $$ -------------------- $$ | . . . O . . . . . . $$ | 4 3 O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . . . O . . . . . . $$ | 4 3 O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
Ko, no?
edit: answered my own question :
$$ $$ -------------------- $$ | . 5 . O 9 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 8 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . 5 . O 9 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 8 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
Re: I love this tesuji
Posted: Wed Jul 20, 2011 1:05 pm
by Chew Terr
Numsgil:
$$ $$ -------------------- $$ | . 5 . O . 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . 5 . O . 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
Nope, don't think so. May be a bit better for white, though.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 1:05 pm
by Kirby
Numsgil wrote:
$$ $$ -------------------- $$ | . . . O . . . . . . $$ | 4 3 O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . . . O . . . . . . $$ | 4 3 O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
Ko, no?
edit: answered my own question :
$$ $$ -------------------- $$ | . 5 . O 9 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 8 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . 5 . O 9 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 8 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
If white has ko threats, I suppose he could consider playing that way to prevent black from getting the points that are referenced in the previous couple of posts.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 1:06 pm
by Chew Terr
Kirby wrote:
Numsgil wrote:
$$ $$ -------------------- $$ | . . . O . . . . . . $$ | 4 3 O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . . . O . . . . . . $$ | 4 3 O 2 O X X . . . $$ | . O 1 O X O O . X X $$ | O X X O X O X X X O $$ | . O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
Ko, no?
edit: answered my own question :
$$ $$ -------------------- $$ | . 5 . O 9 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 8 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | . 5 . O 9 7 . . . . $$ | 4 3 O 2 O X X . . . $$ | 6 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | 8 O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
If white has ko threats, I suppose he could consider playing that way to prevent black from getting the points that are referenced in the previous couple of posts.
Yeah, exactly.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 1:50 pm
by yoyoma
$$ $$ -------------------- $$ | b 5 c O . 6 7 . . . $$ | 4 3 O 2 O X X . . . $$ | 8 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | a O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X
[go]$$ $$ -------------------- $$ | b 5 c O . 6 7 . . . $$ | 4 3 O 2 O X X . . . $$ | 8 O 1 O X O O . X X $$ | O X X O X O X X X O $$ | a O X O X X O O O O $$ | O . X O X . X . O X $$ | O X X X X X O O O X $$ | . O O X . O X O . . $$ | . O . O O O X O X X $$ | . O O O O X X O O X[/go]
White could stubbornly insist on playing a, b, and c while fighting ko!
Re: I love this tesuji
Posted: Wed Jul 20, 2011 4:56 pm
by tchan001
What I really love is how the group of 4 black stones at the bottom have no liberties and are still alive on the board.
Re: I love this tesuji
Posted: Wed Jul 20, 2011 11:18 pm
by lorill
That's only because the border is far away... I thought it was useless to post the full position.
Re: I love this tesuji
Posted: Thu Jul 21, 2011 4:55 am
by HermanHiddema
tchan001 wrote:What I really love is how the group of 4 black stones at the bottom have no liberties and are still alive on the board.
I thought the same thing, but then I realized it is a corner diagram, though it is rather hard to spot
Tip for lorill: When you post something as a problem, remove superfluous stones, like those in the center in this diagram
. Black to play and win something.
:
