Life In 19x19 :: Problem of the day

Joaz Banbeck wrote:

I haven't looked at this one at any length myself, so I have no idea how difficult it may be...

If the answer is not ko, then I would say that the difficulty is "difficult" (or I am just missing something)...

Click Here To Show Diagram Code: [go]$$Bcm1 ko $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . X X X X . . . . . . $$ | . . X X . O O O X . . . . . $$ | . . X O . 4 X O X . . . . . $$ | . X O O 2 1 O O X . . . . . $$ | . X O . 3 . 5 X . . . . . . $$ | ---------------------------[/go]

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

Click Here To Show Diagram Code: [go]$$Bc ko $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . . . . . . . . . . . $$ | . . . . X X X X . . . . . . $$ | . . X X . O O O X . . . . . $$ | . . X O . 2 X O X . . . . . $$ | . X O O 4 1 O O X . . . . . $$ | . X O . 3 . 5 X . . . . . . $$ | ---------------------------[/go]

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

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

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

Author:	Joaz Banbeck [ Mon Sep 13, 2010 7:06 am ]
Post subject:	Problem of the day - Sept 13th, 2010
I haven't looked at this one at any length myself, so I have no idea how difficult it may be: Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O . . O O X . . . . . $$ \| . X O . . . . X . . . . . . $$ \| ---------------------------[/go]`

Author:	Chew Terr [ Mon Sep 13, 2010 7:32 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 5 . X O X . . . . . $$ \| . X O O . 1 O O X . . . . . $$ \| . X O . 3 2 4 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc 'a' is false, 7 connects $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X 8 O O O X . . . . . $$ \| . . X O a 6 X O X . . . . . $$ \| . X O O 4 1 O O X . . . . . $$ \| . X O . 3 2 5 X . . . . . . $$ \| ---------------------------[/go]`

Author:	kokomi [ Mon Sep 13, 2010 7:49 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 3 . X O X . . . . . $$ \| . X O O . 1 O O X . . . . . $$ \| . X O . . . 2 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . 5 X O X . . . . . $$ \| . X O O 2 1 O O X . . . . . $$ \| . X O . . 3 4 X . . . . . . $$ \| ---------------------------[/go]`

Author:	kokomi [ Mon Sep 13, 2010 7:52 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
btw, do we have answers for yesterday's question?

Author:	Kirby [ Mon Sep 13, 2010 8:45 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
kokomi wrote: Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 3 . X O X . . . . . $$ \| . X O O . 1 O O X . . . . . $$ \| . X O . . . 2 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . 5 X O X . . . . . $$ \| . X O O 2 1 O O X . . . . . $$ \| . X O . . 3 4 X . . . . . . $$ \| ---------------------------[/go]` What about this, in your second diagram: Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . 4 X O X . . . . . $$ \| . X O O 2 1 O O X . . . . . $$ \| . X O . . 3 . X . . . . . . $$ \| ---------------------------[/go]`

Life In 19x19 http://www.lifein19x19.com/

Problem of the day - Sept 13th, 2010 http://www.lifein19x19.com/viewtopic.php?f=15&t=1634	Page 1 of 1

Author:	Kirby [ Mon Sep 13, 2010 9:34 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
Joaz Banbeck wrote: I haven't looked at this one at any length myself, so I have no idea how difficult it may be... If the answer is not ko, then I would say that the difficulty is "difficult" (or I am just missing something)... Click Here To Show Diagram Code `[go]$$Bcm1 ko $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . 4 X O X . . . . . $$ \| . X O O 2 1 O O X . . . . . $$ \| . X O . 3 . 5 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X 6 O O O X . . . . . $$ \| . . X O 2 5 X O X . . . . . $$ \| . X O O . 1 O O X . . . . . $$ \| . X O . 4 7 3 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc ko $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . 2 X O X . . . . . $$ \| . X O O 4 1 O O X . . . . . $$ \| . X O . 3 . 5 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 3 . X O X . . . . . $$ \| . X O O 4 1 O O X . . . . . $$ \| . X O . 5 . 2 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 5 . X O X . . . . . $$ \| . X O O . 1 O O X . . . . . $$ \| . X O . 3 2 4 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X 2 O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O 4 1 O O X . . . . . $$ \| . X O . 5 . 3 X . . . . . . $$ \| ---------------------------[/go]`

Author:	Joaz Banbeck [ Mon Sep 13, 2010 10:07 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
kokomi wrote: btw, do we have answers for yesterday's question? Answers? You want answers? Sorry, I don't have them. This is from a set of photocopied problems handed out during lessons by Myungwan Kim 9P. They are problems that he believed we should figure out for ourselves.

Author:	Kirby [ Mon Sep 13, 2010 10:21 am ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
Joaz Banbeck wrote: kokomi wrote: btw, do we have answers for yesterday's question? Answers? You want answers? Sorry, I don't have them. This is from a set of photocopied problems handed out during lessons by Myungwan Kim 9P. They are problems that he believed we should figure out for ourselves. Must be nice to have him as a resource. I went to a workshop that he taught, and it was extremely educational.

Author:	kokomi [ Mon Sep 13, 2010 1:33 pm ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
Joaz Banbeck wrote: kokomi wrote: btw, do we have answers for yesterday's question? Answers? You want answers? Sorry, I don't have them. This is from a set of photocopied problems handed out during lessons by Myungwan Kim 9P. They are problems that he believed we should figure out for ourselves. Wow the answers! It's fun to try to solving out the problems. Will you have this every day? Kirby:Yeah, i misread that and ko is what i can have best so far. This problem looks very like chicken standing on one leg at the first glance, but it looks like it doesn't work that way.

Author:	Joaz Banbeck [ Mon Sep 13, 2010 1:51 pm ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
kokomi wrote: ... Will you have this every day?... I have a 1/4 inch stack of pages, with about 20 problems per page. It will be semi-regular until I get bored or too busy. Of course nothing prevents someone else from posting POTDs too. If I see that someone else has, I will just delay mine unil the next open day.

Author:	shapenaji [ Mon Sep 13, 2010 1:56 pm ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
woops... overlooked, yeah, it's definitely ko

Author:	Magicwand [ Mon Sep 13, 2010 1:58 pm ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
shapenaji wrote: I believe the answer is that black kills outright: Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O . . O O X . . . . . $$ \| . X O . 1 . . X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 3 . X O X . . . . . $$ \| . X O O . . O O X . . . . . $$ \| . X O . 1 . 2 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O 4 3 O O X . . . . . $$ \| . X O . 1 2 5 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O 2 . O O X . . . . . $$ \| . X O . 1 . 3 X . . . . . . $$ \| ---------------------------[/go]` i think there is no way to kill without ko Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O . 2 O O X . . . . . $$ \| . X O . 1 . . X . . . . . . $$ \| ---------------------------[/go]`

Author:	shapenaji [ Mon Sep 13, 2010 2:02 pm ]
Post subject:	Re: Problem of the day - Sept 13th, 2010
Yeah, I typed too fast. That sequence is why I edited Magicwand wrote: shapenaji wrote: I believe the answer is that black kills outright: Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O . . O O X . . . . . $$ \| . X O . 1 . . X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O 3 . X O X . . . . . $$ \| . X O O . . O O X . . . . . $$ \| . X O . 1 . 2 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O 4 3 O O X . . . . . $$ \| . X O . 1 2 5 X . . . . . . $$ \| ---------------------------[/go]` Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O 2 . O O X . . . . . $$ \| . X O . 1 . 3 X . . . . . . $$ \| ---------------------------[/go]` i think there is no way to kill without ko Click Here To Show Diagram Code `[go]$$Bc Black to kill. $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . . . . . . . . . . . $$ \| . . . . X X X X . . . . . . $$ \| . . X X . O O O X . . . . . $$ \| . . X O . . X O X . . . . . $$ \| . X O O . 2 O O X . . . . . $$ \| . X O . 1 . . X . . . . . . $$ \| ---------------------------[/go]`

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