I made an amazon.co.jp order a few months back to get the Maeda set and threw in a bunch of these pocket-sized books. They're great.
$$c Black to play $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O . | $$ . . . . . X . . . | $$ -----------------
[go]$$c Black to play $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O . | $$ . . . . . X . . . | $$ -----------------[/go]
Put your answer in hide tags, of course!
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 7:26 am
by Chew Terr
$$Bc Clean kill? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------
[go]$$Bc Clean kill? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------[/go]
$$Bc Alternate block fails? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . 3 X . 2 . | $$ -----------------
[go]$$Bc Alternate block fails? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . 3 X . 2 . | $$ -----------------[/go]
Edit: changed attempt. Thanks for the hint, Bill!
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 7:28 am
by Bill Spight
Hint.
The opponent's move is not my move.
(Not much of a hint, I know. Here's another.)
A shortage of liberties is worse than constipation. (That's a pun in Japanese.)
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 7:31 am
by Redundant
Fun!
$$c Black to play $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------
[go]$$c Black to play $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------[/go]
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 7:34 am
by tchan001
$$Bc $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------
[go]$$Bc $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------[/go]
No, I didn't look it up. I thought it out
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 7:39 am
by daniel_the_smith
That one seemed impossible the first time I saw it, I'll never forget it...
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 7:54 am
by fwiffo
$$B Shortage of liberties $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------
[go]$$B Shortage of liberties $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------[/go]
$$B Shortage of liberties $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O . | $$ . . . . . X . 1 . | $$ -----------------
[go]$$B Shortage of liberties $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O . | $$ . . . . . X . 1 . | $$ -----------------[/go]
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 8:10 am
by daniel_the_smith
@deja
That's ko.
$$B ko $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O . | $$ . . . . . X . 1 2 | $$ -----------------
[go]$$B ko $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O . | $$ . . . . . X . 1 2 | $$ -----------------[/go]
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 8:14 am
by deja
$$B Shortage of liberties $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 3 | $$ . . . . . X . 1 2 | $$ -----------------
[go]$$B Shortage of liberties $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 3 | $$ . . . . . X . 1 2 | $$ -----------------[/go]
Am I missing something? I'm sure I am...
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 8:16 am
by daniel_the_smith
Right, so white makes a ko threat...
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 8:23 am
by deja
daniel_the_smith wrote:Right, so white makes a ko threat...
But wherever white moves next, black just takes that group, no?
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 8:29 am
by daniel_the_smith
Well, that would depend on the size of the threat and the rest of the board
$$B ko $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 3 | $$ . . . . . X . 1 2 | $$ -----------------
[go]$$B ko $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 3 | $$ . . . . . X . 1 2 | $$ -----------------[/go]
$$B ko $$ 4 5 . . . . . . . | $$ 7 8 . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O X | $$ . . . . . X a X 6 | $$ -----------------
[go]$$B ko $$ 4 5 . . . . . . . | $$ 7 8 . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O X | $$ . . . . . X a X 6 | $$ -----------------[/go]
Instead of , black could capture at (a) to win the ko. Instead of , white can capture at (a) to win the ko.
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 9:12 am
by averell
Chew Terr wrote:
$$Bc Clean kill? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------
[go]$$Bc Clean kill? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . . X 3 . 2 | $$ -----------------[/go]
$$Bc Alternate block fails? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . 3 X . 2 . | $$ -----------------
[go]$$Bc Alternate block fails? $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . . X X X X | $$ . . X X X O O O O | $$ . . X O O X O O 1 | $$ . . . . 3 X . 2 . | $$ -----------------[/go]
Edit: changed attempt. Thanks for the hint, Bill!
correct, but since nobody said it, in your alternate case it's one point better to pass for move 3
Re: Fun tsumego problem
Posted: Wed Jun 30, 2010 9:43 am
by Nakamura
Reminds me of the Golden Chicken Standing on One Leg. ^_^
Best named tesuji ever.
Cool problem, but I solved it. So it must be really easy. I never get hard ones. o.o
, black could capture at (a) to win the ko. Instead of 
, white can capture at (a) to win the ko.