ChessUSA.com TalkChess.com
Hosted by Your Move Chess & Games
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Queens vs Knights
Post new topic    TalkChess.com Forum Index -> Computer Chess Club: General Topics Flat
View previous topic :: View next topic  
Author Message
Lyudmil Tsvetkov



Joined: 12 Jun 2012
Posts: 5580

PostPost subject: Re: Need material for a speech    Posted: Mon Jul 17, 2017 1:12 pm Reply to topic Reply with quote

Eelco de Groot wrote:
Nordlandia wrote:
Mark said that he couldn't find any extra queen penalty in SF8 code.

Komodo is better adjusted for imbalances, such as this.


Well, somebody indeed claimed on Fishcooking Googlegroup that Mark Lefler would have said this, but if it is true Mark must have missed a lenghty period of Stockfish code development (before Stockfish 8) during which there was some explicit code for both Rook and Queen major redundancy, and it included in a comment references to Larry Kaufman's article. It brought Elo so why would we have anbandoned it. The code was simplified into constants for the material imbalance table. That the references were also stripped is a pity. That the code could be improved is also possible. That Komodo specifically does this better is a claim made by Mark maybe, or said poster in Fishcooking, but I have not seen overwhelming evidence of this.

It is easy to show that Harm Geert Muller is right about Knights winning in the "Charge of the light brigade" position. I consider this proven beyond any doubt.


code is getting shorter, man.

more deletions than additions, that is what warms up developers' hearts. Smile

minor pieces do gain value in respect to the queen, but the question is in what precise measure.

Harm's assessment is definitely too much exaggerated.

for example, 2 Qs vs 5 Ns is almost certainly won for the queens.

only thing that matters is what works in code, for example, if you bonise minors vs queen, and then additionally penalise redundancy of major pieces, in a QRR vs RRBNN, the queen will get 2 penalties, maybe a bit too much.

but you are right, SF has still some 100 elo to gain only on imbalances. (current mainframers would not quite agree, I know, judging by the difficulty of a patch passing, but it is true)
Back to top
View user's profile Send private message
Display posts from previous:   
Subject Author Date/Time
Queens vs Knights H.G.Muller Sun Jul 16, 2017 12:45 pm
      Re: Need material for a speech Lyudmil Tsvetkov Sun Jul 16, 2017 2:22 pm
            Re: Need material for a speech Lyudmil Tsvetkov Sun Jul 16, 2017 2:27 pm
                  Re: Need material for a speech Jon Fredrik Åsvang Sun Jul 16, 2017 2:39 pm
      Re: Need material for a speech Jon Fredrik Åsvang Sun Jul 16, 2017 2:25 pm
            Re: Need material for a speech Lyudmil Tsvetkov Sun Jul 16, 2017 3:46 pm
            Re: Need material for a speech H.G.Muller Sun Jul 16, 2017 4:11 pm
                  Re: Need material for a speech Jon Fredrik Åsvang Sun Jul 16, 2017 4:47 pm
                        Re: Need material for a speech H.G.Muller Sun Jul 16, 2017 5:06 pm
                              Re: Need material for a speech Jon Fredrik Åsvang Sun Jul 16, 2017 5:25 pm
                                    Re: Need material for a speech Eelco de Groot Mon Jul 17, 2017 12:36 pm
                                          Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 1:12 pm
                              Re: Need material for a speech Lyudmil Tsvetkov Sun Jul 16, 2017 7:35 pm
                                    Re: Need material for a speech H.G.Muller Sun Jul 16, 2017 8:09 pm
                                          Re: Need material for a speech Lyudmil Tsvetkov Sun Jul 16, 2017 9:14 pm
                                                Re: Need material for a speech Lyudmil Tsvetkov Sun Jul 16, 2017 9:56 pm
                                                Re: Need material for a speech Guenther Simon Sun Jul 16, 2017 9:57 pm
                                                      Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 5:11 am
                                                            Re: Need material for a speech Guenther Simon Mon Jul 17, 2017 7:18 am
                                                                  Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 7:42 am
                                                                        Re: Need material for a speech H.G.Muller Mon Jul 17, 2017 8:04 am
                                                                              Re: Need material for a speech Uri Blass Mon Jul 17, 2017 12:25 pm
                                                                                    Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 1:27 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 2:55 pm
                                                                                          Re: Need material for a speech H.G.Muller Mon Jul 17, 2017 3:19 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 4:09 pm
                                                                                          Re: Need material for a speech H.G.Muller Mon Jul 17, 2017 4:23 pm
                                                                                          Re: Need material for a speech H.G.Muller Mon Jul 17, 2017 8:59 pm
                                                                                          Re: Need material for a speech Milos Stanisavljevic Mon Jul 17, 2017 11:39 pm
                                                                                          Re: Need material for a speech Adam Hair Mon Jul 17, 2017 11:40 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 5:21 am
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 6:43 am
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 11:40 am
                                                                                          Re: Need material for a speech Adam Hair Tue Jul 18, 2017 1:00 pm
                                                                                          Re: Need material for a speech Adam Hair Tue Jul 18, 2017 9:34 pm
                                                                                          Re: Need material for a speech Evert Glebbeek Tue Jul 18, 2017 12:11 pm
                                                                                          Re: Need material for a speech Adam Hair Tue Jul 18, 2017 1:05 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 7:54 pm
                                                                                          Re: Need material for a speech Evert Glebbeek Tue Jul 18, 2017 9:31 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 5:01 am
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 6:10 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 7:21 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 7:26 am
                                                                                          Re: Need material for a speech H.G.Muller Wed Jul 19, 2017 7:33 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 4:21 pm
                                                                                          Re: Need material for a speech H.G.Muller Wed Jul 19, 2017 4:44 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Thu Jul 20, 2017 4:50 am
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 7:31 am
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 7:41 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 4:39 pm
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 5:14 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 4:31 pm
                                                                                          Perfect draw Lyudmil Tsvetkov Wed Jul 19, 2017 4:54 pm
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Wed Jul 19, 2017 4:58 pm
                                                                                          Re: Perfect draw Evert Glebbeek Wed Jul 19, 2017 5:16 pm
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Wed Jul 19, 2017 5:28 pm
                                                                                          Re: Perfect draw H.G.Muller Wed Jul 19, 2017 7:27 pm
                                                                                          Re: Perfect draw Evert Glebbeek Wed Jul 19, 2017 7:38 pm
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 4:56 am
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 4:54 am
                                                                                          Re: Perfect draw Adam Hair Thu Jul 20, 2017 1:52 am
                                                                                          Re: Perfect draw Milos Stanisavljevic Thu Jul 20, 2017 3:16 am
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 5:08 am
                                                                                          Re: Perfect draw Adam Hair Fri Jul 21, 2017 9:12 am
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 5:02 am
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 5:05 am
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 1:29 pm
                                                                                          Re: Perfect draw Lyudmil Tsvetkov Thu Jul 20, 2017 1:33 pm
                                                                                          Re: Perfect draw Evert Glebbeek Fri Jul 21, 2017 7:13 am
                                                                                          Re: Perfect draw Adam Hair Fri Jul 21, 2017 9:17 am
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 5:10 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Thu Jul 20, 2017 5:10 am
                                                                                          Re: Need material for a speech Evert Glebbeek Fri Jul 21, 2017 7:00 am
                                                                                          Re: Need material for a speech H.G.Muller Wed Jul 19, 2017 5:44 pm
                                                                                          Re: Need material for a speech Peter Österlund Wed Jul 19, 2017 7:29 pm
                                                                                          Re: Need material for a speech H.G.Muller Wed Jul 19, 2017 7:45 pm
                                                                                          Re: Need material for a speech Peter Österlund Wed Jul 19, 2017 8:07 pm
                                                                                          Re: Need material for a speech H.G.Muller Wed Jul 19, 2017 8:27 pm
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 8:48 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Thu Jul 20, 2017 5:19 am
                                                                                          Re: Need material for a speech H.G.Muller Thu Jul 20, 2017 6:24 am
                                                                                          Re: Need material for a speech Evert Glebbeek Thu Jul 20, 2017 9:23 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Fri Jul 21, 2017 12:04 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Fri Jul 21, 2017 12:02 pm
                                                                                          Re: Need material for a speech H.G.Muller Fri Jul 21, 2017 12:28 pm
                                                                                          Re: Need material for a speech Uri Blass Fri Jul 21, 2017 1:25 pm
                                                                                          Re: Need material for a speech Uri Blass Fri Jul 21, 2017 1:53 pm
                                                                                          Re: Need material for a speech H.G.Muller Fri Jul 21, 2017 2:42 pm
                                                                                          Re: Need material for a speech Teemu Pudas Fri Jul 21, 2017 4:01 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Fri Jul 21, 2017 1:40 pm
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 7:51 pm
                                                                                          Re: Need material for a speech Peter Österlund Wed Jul 19, 2017 8:40 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Thu Jul 20, 2017 5:33 am
                                                                                          Re: Need material for a speech Arpad Rusz Thu Jul 20, 2017 6:06 am
                                                                                          Re: Need material for a speech Evert Glebbeek Thu Jul 20, 2017 9:21 am
                                                                                          Re: Need material for a speech H.G.Muller Thu Jul 20, 2017 8:54 pm
                                                                                          Re: Need material for a speech Evert Glebbeek Fri Jul 21, 2017 7:27 am
                                                                                          Re: Need material for a speech H.G.Muller Fri Jul 21, 2017 7:56 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Thu Jul 20, 2017 5:14 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 4:54 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 4:58 am
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 6:20 am
                                                                                          Re: Need material for a speech Evert Glebbeek Tue Jul 18, 2017 11:12 am
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 11:19 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 7:50 pm
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 8:08 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 5:19 am
                                                                                          Re: Need material for a speech H.G.Muller Wed Jul 19, 2017 7:14 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 7:29 am
                                                                                          Re: Need material for a speech Evert Glebbeek Tue Jul 18, 2017 9:35 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 5:29 am
                                                                                          Re: Need material for a speech Evert Glebbeek Wed Jul 19, 2017 7:04 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Wed Jul 19, 2017 4:12 pm
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 6:54 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 7:50 am
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 9:07 am
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 7:41 pm
                                                                                          Re: Need material for a speech H.G.Muller Tue Jul 18, 2017 8:11 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 4:01 pm
                                                                                          Re: Need material for a speech Guenther Simon Tue Jul 18, 2017 12:13 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Tue Jul 18, 2017 7:37 pm
                                                                              Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 1:22 pm
                                                                                    Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 1:24 pm
                                                                        Re: Need material for a speech Guenther Simon Mon Jul 17, 2017 8:47 am
                                                                              Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 1:33 pm
                                                                                    Re: Need material for a speech Guenther Simon Mon Jul 17, 2017 1:44 pm
                                                                                          Re: Need material for a speech Lyudmil Tsvetkov Mon Jul 17, 2017 4:03 pm
      Queens vs Knights broadcast H.G.Muller Tue Jul 18, 2017 2:48 pm
            Re: Queens vs Knights broadcast H.G.Muller Tue Jul 18, 2017 4:09 pm
                  Re: Queens vs Knights broadcast H.G.Muller Tue Jul 18, 2017 8:58 pm
                        Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 5:08 am
                        Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 9:25 am
                              Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 2:21 pm
                                    Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 4:01 pm
                              Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:58 pm
            Re: Queens vs Knights broadcast Lyudmil Tsvetkov Tue Jul 18, 2017 7:35 pm
                  Re: Queens vs Knights broadcast H.G.Muller Tue Jul 18, 2017 7:46 pm
                        Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 5:06 am
                              Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 6:29 am
                                    Re: Queens vs Knights broadcast Evert Glebbeek Wed Jul 19, 2017 7:11 am
                                          Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 7:17 am
                                                Re: Queens vs Knights broadcast Evert Glebbeek Wed Jul 19, 2017 7:24 am
                                                      Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 7:41 am
                                                            Re: Queens vs Knights broadcast Evert Glebbeek Wed Jul 19, 2017 7:47 am
                                                                  Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:21 pm
                                                                        Re: Queens vs Knights broadcast Evert Glebbeek Wed Jul 19, 2017 5:05 pm
                                                Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 7:37 am
                                    Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 7:34 am
                                          Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 7:43 am
                                                Re: Queens vs Knights broadcast Evert Glebbeek Wed Jul 19, 2017 7:55 am
                                                      Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 8:28 am
                                                            Re: Queens vs Knights broadcast Evert Glebbeek Wed Jul 19, 2017 10:14 am
                                                                  Re: Queens vs Knights broadcast H.G.Muller Wed Jul 19, 2017 1:51 pm
                                                                        Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:55 pm
                                                                  Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:49 pm
                                                            Re: Queens vs Knights broadcast Guenther Simon Wed Jul 19, 2017 11:59 am
                                                                  Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:18 pm
                                                            Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:39 pm
                                                      Re: Queens vs Knights broadcast Lyudmil Tsvetkov Wed Jul 19, 2017 3:27 pm
      Re: Queens vs Knights Uri Blass Tue Aug 01, 2017 2:09 pm
            Re: Queens vs Knights Jon Fredrik Åsvang Tue Aug 01, 2017 3:14 pm
                  Re: Queens vs Knights H.G.Muller Tue Aug 01, 2017 5:29 pm
                        Re: Queens vs Knights Jon Fredrik Åsvang Thu Aug 10, 2017 5:59 am
Post new topic    TalkChess.com Forum Index -> Computer Chess Club: General Topics

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum




Powered by phpBB © 2001, 2005 phpBB Group
Enhanced with Moby Threads