Search found 6374 matches

by Uri Blass
Tue Apr 23, 2019 7:01 pm
Forum: Computer Chess Club: General Topics
Topic: New results in the ERET chess test
Replies: 11
Views: 505

Re: New results in the ERET chess test

Fire 7.1 behind Critter, Laser, Fizbo, Booot, Andscacs, Xiphos, Sting, Deep Shredder and Ethereal? Critter 1.6 better than Fritz, Equinox and Gull? Deep Shredder 13 better than Xiphos? And so on ... Looks like a lottery. Not to me. The probability of an engine that is 200 elo better to be in a bett...
by Uri Blass
Sat Apr 20, 2019 9:07 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: No standard specification for Perft
Replies: 22
Views: 476

Re: No standard specification for Perft

If you want perft to be a representative measure of the speed of an engine it should indeed focus more on capture-only generation. Perthaps it would be useful to define a function perft(N, M) which does N ply of full-width search followed by M ply of captures only. Most people use perft only for te...
by Uri Blass
Thu Apr 18, 2019 4:03 am
Forum: Computer Chess Club: General Topics
Topic: The problem with adjudication based on score
Replies: 26
Views: 1441

Re: The problem with adjudication based on score

While I agree with you these situations are very rare and works both ways. Adjudication massively speeds up the process of testing, and if only 1% of the games produce wrong results it's still worth to adjudicate. Speed vs accuracy. I agree with your point that these situations are so rare that it'...
by Uri Blass
Tue Apr 09, 2019 9:42 am
Forum: Computer Chess Club: General Topics
Topic: What engine breaks even with GMs in blitz?
Replies: 62
Views: 4231

Re: What engine breaks even with GMs in blitz?

I ran a twenty game blitz (3' + 2") knight odds match (two ply book for variety, both b1 and g1 knights) between Lc0 11248 (on my 2080) vs. Giraffe (best version, on my 5 GHz i7 laptop), with Giraffe as a proxy for Magnus Carlsen, a good one since it "knows" to simplify when up a piece while some s...
by Uri Blass
Sun Apr 07, 2019 7:32 am
Forum: Computer Chess Club: General Topics
Topic: stockfish 10 vs. Mephisto III S Glasgow
Replies: 40
Views: 2081

Re: stockfish 10 vs. Mephisto III S Glasgow

35 years of software development ... Or is it 35 years of hardware development ? It is 35 years of both. The new software play chess better with the same hardware and the new hardware play chess better with the same software. Maybe stockfish is not the best with the oldest hardware that it can use(...
by Uri Blass
Fri Apr 05, 2019 3:06 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8572

Re: Lc0 51010

Exactly. Stockfish is artificial stupidity. It concentrates on search instead of knowledge. Take away the millions and millions of NPS and you see the artificial stupidity. It is more a pocket calculator with enormous power then an entity that can play chess. Of course , as we can see, this stupidi...
by Uri Blass
Fri Apr 05, 2019 3:01 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8572

Re: Lc0 51010

SF > Mephisto at same nps. I suspect it's less clear at same depth though. I am sure that you are right for big number of nodes. I am less sure if you are right if both programs get small number of nodes. I think that the main advantage of stockfish it that it has more intelligent search so it earn...
by Uri Blass
Wed Apr 03, 2019 11:07 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8572

Re: Lc0 51010

knowing patterns help but you need search to verify. 4r2k/q5pp/8/3Q2N1/8/8/5PPP/6K1 w - - 3 1 Otherwise you play here Nf7+ and lose after Qxf7 You picked a bad example. I just checked lc0-network41752 and it sees both patterns: the smothered mate and the back-rank mate. The patterns are weighted: N...
by Uri Blass
Wed Apr 03, 2019 12:58 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8572

Re: Lc0 51010

Seems like I spoke too quickly and 0 node Leela is already quite strong at Blitz. 0 node is certainly a lie. You cannot play with 0 nodes. I also do not buy the 1 node. Chess players including humans always see more than a single move in part of the moves of a game(even at the fastest time control)...
by Uri Blass
Wed Apr 03, 2019 9:30 am
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8572

Re: Lc0 51010

Seems like I spoke too quickly and 0 node Leela is already quite strong at Blitz. 0 node is certainly a lie. You cannot play with 0 nodes. I also do not buy the 1 node. Chess players including humans always see more than a single move in part of the moves of a game(even at the fastest time control)...