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

Example of superko complexity
http://www.lifein19x19.com/viewtopic.php?f=45&t=19327		 Page 1 of 1
Author:  Gérard TAILLE [ Mon Nov 13, 2023 12:08 pm ]
Post subject:  Example of superko complexity
Click Here To Show Diagram Code
[go]$$B
$$ --------------------
$$ |. X X . O X X X . |
$$ |X O O O O X X X X |
$$ |. O O X X X X X X |
$$ |O O O X . . . . . |
$$ |X X X X X X X X X |
$$ |O O O O O O O O O |
$$ |O O O O O O O O O |
$$ |O X X X X X O O O |
$$ |. O X . X . X O . |
$$ --------------------[/go]

In the position above you can see a double ko on the bottom of the board and the possibility of a sending 2 - retun 1 in the upper left corner.
My question is the following. Assuming AGA rules (superko based on SSK) and assuming a pass does not lift the ko ban, what is the result if black to play and if white to play?
If you solve this problem easily then the rule used is fine but did you find easily the final result?
Author:  Yoav Yaffe [ Mon Nov 20, 2023 2:54 am ]
Post subject:  Re: Example of superko complexity
=== SPOILER ALERT ===

The link https://senseis.xmp.net/?StrategicDiffe ... koVariants (found in https://www.lifein19x19.com/viewtopic.php?f=45&t=15744 ) will lead you to the (quite surprising) answer. You'll also find there (a claim about) the result under PSK.
Page 1 of 1 All times are UTC - 8 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/