Cassandra wrote:
Gérard TAILLE wrote:
- Click Here To Show Diagram Code
[go]$$W
$$ +-------------------+
$$ | . . O . X O . O . |
$$ | . . O . X X O O O |
$$ | . . O O X . X O O |
$$ | . . . O X X O O O |
$$ | . . . O O O X X X |
$$ | . . . . . O O . . |
$$ | . . . . . . O O O |
$$ | . . . . . . . . . |
$$ | . . . . . . . . . |
$$ +-------------------+[/go]
Please, try to respect without any change the position I proposed.
You seem to not agree that this position is not a double ko but what harms in this position when you take SL definition?
- Click Here To Show Diagram Code
[go]$$W
$$ +-------------------+
$$ | . . O . X O . O . |
$$ | . . O . X X O O O |
$$ | . . O O X . X O O |
$$ | . . . O X X O O O |
$$ | . . . O O O X X X |
$$ | . . . . . O O 1 . |
$$ | . . . . . . O O O |
$$ | . . . . . . . . . |
$$ | . . . . . . . . . |
$$ +-------------------+[/go]
The L&D status of White's group in the corner does NOT depend on the two ko-shapes, as can be easily proven.
No Thomas I cannot agree on this point. In J89, when you look for the status of the white group in the corner it is BLACK to play first.
Cassandra wrote:
Please be aware that Sensei's Library's definition refers primarily to "play".
Agreed. A double ko in the confirmation phase has never been defined. If you use it with a different definition you have to give this defintion and maybe you have to use another wording to avoisd ambiguity : "
Honte's double ko for confirmation phase" or whatever you want
Cassandra wrote:
The L&D status of Black's group does NOT depend on the two ko-shapes as well, as White will be able to occupy its outside liberties with ease. Black might prolong his lifetime a bit by capturing into the double-ko, but that's all.
Still agreed, contrary to white group, the status of black does not depend on the double ko