[go]$$W White to play
$$ ------------------
$$ | . . . X . . . . .
$$ | . O . X . . . . .
$$ | . . . X . . . . .
$$ | . O X , . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | X X X . . . . . .
$$ | . . . . . . . . .[/go]
How about this?
Edit: I think that this is an interesting variant. I did not want to take away from the original, but now time has passed, and I am unhiding this note.
Re: random tsumego I made
Posted: Sat Oct 30, 2010 3:22 pm
by emeraldemon
I actually think white to play is the more interesting one:
$$W Ko
$$ ------------------
$$ | . 2 6 X . . . . .
$$ | 4 O 1 X . . . . .
$$ | 5 . 3 X . . . . .
$$ | . O X , . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | . X X . . . . . .
$$ | . . . . . . . . .
[go]$$W Alive I believe.
$$ ------------------
$$ | . 2 . X . . . . .
$$ | 3 O 1 X . . . . .
$$ | . . . X . . . . .
$$ | . O X , . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | . X X . . . . . .
$$ | . . . . . . . . .[/go]
Re: random tsumego I made
Posted: Sat Oct 30, 2010 8:25 pm
by emeraldemon
Oh man, I completely missed that. I need to do more tsumego
Re: random tsumego I made
Posted: Sun Oct 31, 2010 1:45 pm
by ndkrempel
This is a nice shape, and I would like to put it or some variation of it on goproblems.com if it's not already there. Could I have your permission to do that (I would give credit of course), or maybe you'd like to do it yourself?
Thanks!
Re: random tsumego I made
Posted: Sun Oct 31, 2010 2:30 pm
by Bill Spight
$$W Approach ko
$$ ------------------
$$ | 7 6 . X . . . . .
$$ | 4 O 1 X . . . . .
$$ | 5 2 3 X . . . . .
$$ | . O X , . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | X X X . . . . . .
$$ | . . . . . . . . .
[go]$$W Clever attack
$$ ------------------
$$ | . 2 6 X . . . . .
$$ | 3 O 1 X . . . . .
$$ | . 5 4 X . . . . .
$$ | . O X , . . . . .
$$ | . O X . . . . . .
$$ | . O X . . . . . .
$$ | 7 O X . . . . . .
$$ | X X X . . . . . .
$$ | . . . . . . . . .[/go]
is emeraldemon's clever attack. is Dusk Eagle's refutation.
Re: random tsumego I made
Posted: Mon Nov 01, 2010 11:20 am
by emeraldemon
ndkrempel: I'll be happy to add both variants, as soon as I'm sure I understand them
Bill:
So it seems like your saying in the variant you posted, the correct solution is an approach ko, but in the original problem white can live? In particular this line:
$$W Works for W
$$ ------------------
$$ | . 5 . X . . . . .
$$ | 4 O 1 X . . . . .
$$ | 8 2 3 X . . . . .
$$ | 6 O X , . . . . .
$$ | 7 O X . . . . . .
$$ | . O X . . . . . .
$$ | 9 O X . . . . . .
$$ | a X X . . . . . .
$$ | . . . . . . . . .
[go]$$W Works for W
$$ ------------------
$$ | . 5 . X . . . . .
$$ | 4 O 1 X . . . . .
$$ | 8 2 3 X . . . . .
$$ | 6 O X , . . . . .
$$ | 7 O X . . . . . .
$$ | . O X . . . . . .
$$ | 9 O X . . . . . .
$$ | a X X . . . . . .
$$ | . . . . . . . . .[/go]
With no stone at a, white can play 9? If that's the difference, it's certainly an interesting variation
Re: random tsumego I made
Posted: Mon Nov 01, 2010 12:12 pm
by Bill Spight
emeraldemon wrote:
Bill:
So it seems like your saying in the variant you posted, the correct solution is an approach ko, but in the original problem white can live? In particular this line:
$$W Works for W
$$ ------------------
$$ | . 5 . X . . . . .
$$ | 4 O 1 X . . . . ..
$$ | 8 2 3 X . . . . .
$$ | 6 O X , . . . . .
$$ | 7 O X . . . . . .
$$ | . O X . . . . . .
$$ | 9 O X . . . . . .
$$ | a X X . . . . . .
$$ | . . . . . . . . .
attempts to avoid ko. But Black fills, sacrificing four stones.
is nakade. After 
White cannot capture because of shortage of liberties. 
is emeraldemon's clever attack. 
is Dusk Eagle's refutation.