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Subject: A question about Null-Move pruning implementation

Author: Federico Corigliano

Date: 17:44:50 07/12/03

In previous version of my chess engine I have:

if(!in_check && !threat && (phase != ENDGAME) && depth > 2)
{
    Do_null_move()
    ...


Now I changed it to:

if(!in_check && !threat && (phase != ENDGAME))
{
    Do_null_move()
    ...

And performs better in the WAC test suite.
Now when the remaining depth is < than R, it goes directly to the Qsearch,
because I have:

if(depth <= 0 || depth >= MAXDEPTH)
{
    score = Qsearch();
    return score;
}

Anyone probed this? It's safe?

Federico

Re: A question about Null-Move pruning implementation Omid David Tabibi 17:55:41 07/12/03

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