Search found 5 matches

by armand
Thu Nov 11, 2010 9:16 am
Forum: Programming and Technical Discussions
Topic: What would be the optimal TT size (given some constraints?)
Replies: 0
Views: 1652

What would be the optimal TT size (given some constraints?)

In my chess engine I have some language/platform limitations. I've been using a TT table in the past but it didn't work very well, now i want to re-implement it ...

Given that I can only have 32bit hashes, what would be the best TT size? I assume it depends on the search depth as well, which is in ...
by armand
Thu Nov 11, 2010 9:10 am
Forum: Programming and Technical Discussions
Topic: Move ordering improvements
Replies: 13
Views: 11388

Re: Move ordering improvements

I was wondering about the History Heuristics as well, so rather than opening a new topic, I'd like to ask a few questions here:

- HH seems a more general case of Killer Moves, wouldn't they be preferred over KM?
- at what ply depth do they start to become irrelevant? 6? 8?
- should they be ...
by armand
Mon Nov 08, 2010 3:12 pm
Forum: Programming and Technical Discussions
Topic: Iterative negamax?
Replies: 5
Views: 3500

Re: Iterative negamax?

Thanks a lot for the code, I'm "decoding" now :)
by armand
Sun Nov 07, 2010 6:53 pm
Forum: Programming and Technical Discussions
Topic: Iterative negamax?
Replies: 5
Views: 3500

Re: Iterative negamax?

Just to be clearer, I'm looking for iterative alpha-beta pruning. I can use conditionals and loops, but no gotos.
by armand
Sat Nov 06, 2010 9:53 am
Forum: Programming and Technical Discussions
Topic: Iterative negamax?
Replies: 5
Views: 3500

Iterative negamax?

I want to change the usual recursive negamax search into an iterative one. I am implementing chess into a rather primitive environment (if not downright hostile) and the iterative approach would provide benefits.

I've been looking but I couldn't find one semi-legible working code. I'd love to see ...