Re: transposition table

[Darren Cook <darren@xxxxxxxxxxxxxx>]

>> This works fine as long as  (super) Ko is not relevant for the position, (I
>> notice a great speed improvement), but  when Ko or super Ko is relevant,
there

> Since there are very few symmetric positions in a real GO game (after
>the first 4 or so moves)
>I do not consider board symmettries.

That was my reaction, but if I understood Serge correctly the speed
improvement mentioned above came after adding board symmetries. ?

I use the board symmetries in a pattern database, but then I ignore ko
completely (and let search based on the patterns discover illegal moves).

Darren