I just add the condition that the depth has to be at least 4 in order to try null move. You look at so few nodes at the lower depths that it's not worth doing null move in my opinion.

All right, thanks for the assistance!

David Cimbalista

Ok, thanks for the response!

Another quick question: should I be probing and saving to the table in quiescence search? I'm doing it now and it's slowing down the engine.

Thanks,
David Cimbalista

Hi,

I was wondering if any of you could tell me how to use a transposition table. I already have it implemented, I just need to know when I should probe the table, when I should be saving nodes, which node types at different places in the tree, and any other advice you could give me. Your comments ...

Thank you Bob!
I'll try this out as soon as I can.

Hi Mr. Hyatt,

Thanks for the help! I do have one more question though. Like I said in my original post, I'm using two different functions for my search(SearchMin and SearchMax). Your suggestion would seem to only work in a Negamax framework. How would I convert your parameters(beta-1, beta) to two ...

Hi all,

I have written a chess engine that is UCI functional and is reasonably strong. My question though is concerning null move pruning. I have not been able to get it to work despite many hours of work.
I think my main problem is that I am searching with the wrong bounds. I have heard of a ...