Look at the board position at move 77 (black C9).  The move of Black J3 is
both a violation of positional superko (used by CGOS) and the more lax
situational super ko.

On Fri, Jan 9, 2009 at 12:40 PM, Mark Boon <tesujisoftw...@gmail.com> wrote:

> The attached game played on CGOS was awarded a win for white due to an
> illegal move. Black tried to play J3, which according to the game-record is
> a ko. Nothing could be further from the truth...
>
> Rather shocking really. What happened here?
>
> Mark
>
>
>
>
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