Life In 19x19

Posted: **Sun May 16, 2010 11:52 am**

Here is an easy problem to mark my 100th post on this forum.

Click Here To Show Diagram Code: [go]$$Wc Status? $$ . . . . . . . . . . | $$ . . . . O . . O O . | $$ . . . . . . O X O . | $$ , . . . O X O X O . | $$ . . . O . . O X X O | $$ . O . O X X X . X . | $$ . . . X . . . . . . | $$ --------------------[/go]

Posted: **Sun May 16, 2010 12:08 pm**

My try :o

If White goes first, it's dead.

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

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

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

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

If Black goes first, it's alive.

Click Here To Show Diagram Code: [go]$$Bc Alive as it is. $$ . . . . . . . . . . | $$ . . . . O . . O O . | $$ . . . . . . O X O . | $$ , . . . O X O X O . | $$ . . . O . . O X X O | $$ . O . O X X X . X . | $$ . . . X . . . 1 . . | $$ --------------------[/go]

Click Here To Show Diagram Code: [go]$$Bc Alive as it is. $$ . . . . . . . . . . | $$ . . . . O . . O O . | $$ . . . . . . O X O . | $$ , . . . O X O X O . | $$ . . . O . . O X X O | $$ . O . O X X X . X 1 | $$ . . . X . . . . . . | $$ --------------------[/go]

Posted: **Sun May 16, 2010 1:47 pm**

Posted: **Sun May 16, 2010 1:54 pm**

@SoDesuNe

Posted: **Sun May 16, 2010 1:56 pm**

topazg wrote:@SoDesuNe

$$Wc
$$ . . . . . . . . . . |
$$ . . . . O . . O O . |
$$ . . . . . . O X O . |
$$ , . . . O X O X O . |
$$ . . . O . . O X X O |
$$ . O . O X X X . X 2 |
$$ . . . X 4 . 5 1 3 . |
$$ --------------------

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

This is an important variation too ... White 5 leaves seki, so instead?

Posted: **Mon May 17, 2010 1:19 am**

topazg wrote:@SoDesuNe

$$Wc
$$ . . . . . . . . . . |
$$ . . . . O . . O O . |
$$ . . . . . . O X O . |
$$ , . . . O X O X O . |
$$ . . . O . . O X X O |
$$ . O . O X X X . X 2 |
$$ . . . X 4 . 5 1 3 . |
$$ --------------------

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

This is an important variation too ... White 5 leaves seki, so instead?

Posted: **Tue May 18, 2010 10:43 am**

Posted: **Thu May 20, 2010 3:34 am**

I guess most people who attempted this problem would have figured out the solution by now. Thanks for the attempts!

Posted: **Thu May 20, 2010 3:38 am**

My guess:

Addendum after looking at the solutions:

Life In 19x19

2010 May 17 problem

2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem

Re: 2010 May 17 problem