Search found 258 matches

by tomitank
Tue Jun 27, 2017 9:14 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Mate Score
Replies: 16
Views: 3344

Mate Score

Hi! Which one is better? (Why?) I'm using Fail-Soft, Aspiration Windows (50), PVS, NMP, Hash Table, LMR, Razoring, Futility Pruning, LMP. Vice 1.0: #define MAXDEPTH 64 #define INFINITE 30000 #define ISMATE (INFINITE - MAXDEPTH) Sungours 1.4: #define MAX_PLY 64 #define INF 32767 #define MATE ...
by tomitank
Mon Jun 19, 2017 3:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tuning Futility Margin
Replies: 7
Views: 1988

Re: Tuning Futility Margin

Nemzetközileg ismert neve Elo (gyakran nagybetűkkel ELO, bár nem betűszó). Nevét Élő Árpád (angol, külföldön ismertebb nevén Arpad Elo) magyar születésű amerikai fizikaprofesszorról kapta. -------------------------------------------------------------------------------- Internatio...
by tomitank
Mon Jun 19, 2017 2:42 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tuning Futility Margin
Replies: 7
Views: 1988

Re: Tuning Futility Margin

What time management do you recommend?
I have i3-6100, and my average depth is 10-14 / 1 sec.
10s + 0.1 is correct?

Tamas
by tomitank
Mon Jun 19, 2017 11:04 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tuning Futility Margin
Replies: 7
Views: 1988

Re: Tuning Futility Margin

While the ELO loss around zero, then i winning extra speed -> same time, more depth -> extra ELO .... or? Idea from: http://people.csail.mit.edu/heinz/dt/node18.html Ernst A. Heinz: Although extended futility pruning is theoretically unsound, extensive experiments with our master-strength chess prog...
by tomitank
Mon Jun 19, 2017 9:08 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tuning Futility Margin
Replies: 7
Views: 1988

Tuning Futility Margin

Hi!

I've read that it can be tuned with fixed-depth search.
Minimum ELO loss should be sought.
I'm testing this at depth 8. (Self game)
(I tried at depth <= 4)
My average depth is 10-14.
Does anyone have a test result of the "recommended" ELO loss?

Thx, Tamas
by tomitank
Mon May 15, 2017 9:47 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Update Best Score and Best Move
Replies: 13
Views: 4477

Re: Update Best Score and Best Move

Also at root node "for UCI best move" the hash is good or better from alpha < Score < beta?

Thanks, Tamas
by tomitank
Mon May 15, 2017 2:52 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Update Best Score and Best Move
Replies: 13
Views: 4477

Re: Update Best Score and Best Move

Hi! Currently i extract PV (and the UCI best move) from the Hash. I tried many more variation, but [Sample 1.] work for me better. I tried this avoiding the hash bug, but it's not so good for me: if (Score > BestScore) { if (Score > alpha) { if (Score >= beta) {...
by tomitank
Wed May 10, 2017 8:57 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Update Best Score and Best Move
Replies: 13
Views: 4477

Update Best Score and Best Move

Hi all! I write from Hungary, therefore sorry for my english. I'd like to know, what's the best way to update in PVS the best score and best move? Sample 1. if (Score > BestScore) { if (Score > alpha) { if (Score >= beta) { return Score; } alpha = Score; &...