Search found 142 matches

by Fulvio
Thu Aug 01, 2019 12:24 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 Settings
Replies: 6
Views: 1238

Re: Lc0 Settings

Is there a page explaining how the different engine Settings work (With minimum and maximum of values)? I found a page on the Leela homepage, but there are only parameters of Lc0 0.17. That's sad sorry. You can see all the options, along with their default, min and max values here. What they all me...
by Fulvio
Mon Jul 29, 2019 6:29 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish vs. Lc0: IMHO disappointing result for Lc0
Replies: 37
Views: 3067

Re: Stockfish vs. Lc0: IMHO disappointing result for Lc0

Here's one of the games...let me know what you think of this "beauty" :D :wink: I don't understand the hate. It's a beautiful game, original, interesting and with a spectacular ending. Lc0 just blundered with 19.. c5 due to the slow GPU (it created the d6 weakness, which was exploited with the incr...
by Fulvio
Tue Apr 23, 2019 11:42 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish misevaluations:
Replies: 31
Views: 3344

Re: Stockfish misevaluations:

And what's wrong with that? White will eventually sac a pawn, break free and win the game :shock: It will take some time with 50 move rule, sure, but white will win. +1 I played 3 games as black against Stockfish and lost them all. If you allow the b5 sac the queen enters using the dark squares and...
by Fulvio
Fri Apr 05, 2019 8:42 pm
Forum: Computer Chess Club: General Topics
Topic: Elements of the ULTIMATE Chess GUI?
Replies: 197
Views: 25294

Re: Elements of the ULTIMATE Chess GUI?

If we use MonetDB, then the data will be accessed at (approximately) memory speed. Do you have some concrete benchmark? Let's say a 10 million games database: how long it takes to find the games (not just the positions, if I would like to study the ending I need to see the continuation) with for ex...
by Fulvio
Fri Apr 05, 2019 8:16 pm
Forum: Computer Chess Club: General Topics
Topic: Elements of the ULTIMATE Chess GUI?
Replies: 197
Views: 25294

Re: Elements of the ULTIMATE Chess GUI?

sovaz1997 wrote:
Fri Apr 05, 2019 8:05 pm
For the ending, there are other solutions - the Nalimov tables, the Syzygy tables. I don't think that the database is suitable for this.
Oh... no positional search?
That's a very big limitation for the ULTIMATE Chess GUI...
by Fulvio
Fri Apr 05, 2019 8:01 pm
Forum: Computer Chess Club: General Topics
Topic: Elements of the ULTIMATE Chess GUI?
Replies: 197
Views: 25294

Re: Elements of the ULTIMATE Chess GUI?

If we use MonetDB, then the data will be accessed at (approximately) memory speed. Do you have some concrete benchmark? Let's say a 10 million games database: how long it takes to find the games (not just the positions, if I would like to study the ending I need to see the continuation) with for ex...
by Fulvio
Fri Apr 05, 2019 1:00 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 14788

Re: Lc0 51010

I don't think Mephisto III would beat a modern program restricted to the same nps. You picked the wrong word. You believe that a modern program plays decently even with restricted NPS. If you thought about it.... Let's see how Stockfish behave in the previous position, 200 seconds per 5NPS = 1000 n...
by Fulvio
Thu Apr 04, 2019 7:47 am
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 14788

Re: Lc0 51010

I do not agree and I consider memorizing patterns of search as doing a search. Communication requires a shared terminology: https://www.chessprogramming.org/Evaluation https://www.chessprogramming.org/Search#Search_Algorithms How can you know that Nf7+ is bad without having in mind Nf7+ Qxf7 Qxf7 R...
by Fulvio
Wed Apr 03, 2019 6:00 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 14788

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 Fulvio
Fri Mar 29, 2019 3:35 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On the establishment of domains wherein magic numbers can and cannot exist
Replies: 1
Views: 584

Re: On the establishment of domains wherein magic numbers can and cannot exist

A bishop on G8 is the easiest case, because all the relevant squares are aligned and well spaced. We can than decompose magic * bitboard into (magic * 2^square1) + (magic * 2^square2) + ... without worrying about collision and interference. With very few lines of code we can quickly find 48 valid** ...