Search found 199 matches

by abulmo2
Mon Jun 29, 2020 8:06 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 2742

Re: Throwing out draws to calculate Elo

If you need a large number of games to demonstrate the superiority of an engine, it usually means the superiority is not significant. Throwing out draws to calculate WILO has an higher sensitivity over regular ELO when the percentage of draws is reasonable, say 60 or 70%, not when it reaches 99,999....
by abulmo2
Fri Jun 12, 2020 9:49 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft speed and depth questions
Replies: 43
Views: 2372

Re: Perft speed and depth questions

While correctly working code is most important, 14M nps seems a little on the slow side. Tinker is far from the fastest at perft, but it is about 95M nps on a 3.6GHz CPU. Move generation in Tinker is done with magic bitboards, BTW. 95M nps without bulk counting is very fast. 14 Mnps looks like a go...
by abulmo2
Thu Jun 11, 2020 8:33 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Perft speed and depth questions
Replies: 43
Views: 2372

Re: Perft speed and depth questions

While correctly working code is most important, 14M nps seems a little on the slow side. Tinker is far from the fastest at perft, but it is about 95M nps on a 3.6GHz CPU. Move generation in Tinker is done with magic bitboards, BTW. 95M nps without bulk counting is very fast. 14 Mnps looks like a go...
by abulmo2
Thu May 14, 2020 11:31 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: sort every moves or pickNext
Replies: 14
Views: 1257

Re: sort every moves or pickNext

In Amoeba I started with a legal move generator and sorted the full move list. Now I use a staged move generator but still sort partial list of moves (good capture, quiet moves, bad captures). Just picking the best move of an unsorted list of moves did not work well in Amoeba. I think my insertion s...
by abulmo2
Sat May 09, 2020 10:08 am
Forum: Computer Chess Club: General Topics
Topic: MEA and temere.epd
Replies: 82
Views: 10750

Re: MEA and temere.epd

I ran Rubichess, 84.xxx positions, 250ms time-bonus=on and time-bonus=off EPD : epd\ProDeo.epd Time : 250ms Solving Max Total Time Hash Engine Score Used Time Found Pos Time Score Rate ms Mb Cpu CCRL 1 time-bonus=on 1710890 06:43:40.3 40733 84617 00:19:22.2 2538510 67.4% 250 128 1 3200 2 time-bonus...
by abulmo2
Sat May 09, 2020 10:03 am
Forum: Computer Chess Club: General Topics
Topic: MEA and temere.epd
Replies: 82
Views: 10750

Re: MEA and temere.epd

I just tested on various Amoeba's versions (1.0 to 3.2 in development), and using my own MEA implementation¹ the impact of time bonus. It seems to just add noise to the score. Let's check if we are talking about the same. Hypothetical example from the start position: depth-1 bm Nf3 time 5 ms depth-...
by abulmo2
Sat May 09, 2020 9:47 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Zenmastur vs Ovyron No it's not another GROB II!
Replies: 144
Views: 10280

Re: Zenmastur vs Ovyron No it's not another GROB II!

I think your making a mountain out of a mole hill. On the other hand, I hope you like mole hills as you're likely to come across quite a few of them in this position! :mrgreen: :mrgreen: :mrgreen: Here is "Le Môle", a mountain in France (Haute Savoie). :D https://upload.wikimedia.org/wikipedia/comm...
by abulmo2
Thu May 07, 2020 12:11 pm
Forum: Computer Chess Club: General Topics
Topic: MEA and temere.epd
Replies: 82
Views: 10750

Re: MEA and temere.epd

I am doubtful about this time bonus... Yes, but note that second (third/fourth) best moves with 9 points are almost as good as the best move. And volume (10,000 positions at least) is extremely important to weed out randomness. I just tested on various Amoeba's versions (1.0 to 3.2 in development),...
by abulmo2
Tue May 05, 2020 1:43 pm
Forum: Computer Chess Club: General Topics
Topic: test the intelligence of your engine
Replies: 9
Views: 1020

Re: test the intelligence of your engine

How many iteration does your program do in the following position: Only few smart programs do not more than 1 iteration Another question is how many different moves chess programs are going to suggest(all moves have the same stalemate value so no move is a mistake) k2N4/P7/K7/3PPP2/8/8/R7/R5B1 w - ...
by abulmo2
Tue May 05, 2020 10:31 am
Forum: Computer Chess Club: General Topics
Topic: MEA and temere.epd
Replies: 82
Views: 10750

Re: MEA and temere.epd

first, thank you for all your clarifications. The idea behind the tool is that one runs it at fast time control since you need so many positions to get a reliable result, hence the tool concentrates itself at time controls between 100-500ms, 1000ms max. This gives the following two tables, ms (milli...