Search found 125 matches

by clumma
Thu Jul 05, 2018 5:58 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish 180113 - Initial position until depth 70
Replies: 4
Views: 655

Re: Stockfish 180113 - Initial position until depth 70

Because SF has changed its mind several times on the way to ply 70, I think it is a mistake to assume that it has "settled" on c4. Agree. Engines are not optimized for this sort of analysis. I am somewhat fond of 1.d4 because I understand why it ought to be better (as outlined by Berliner). I also ...
by clumma
Thu Jul 05, 2018 5:48 pm
Forum: Computer Chess Club: General Topics
Topic: Is the Blackmar-Diemar Gambit playable?
Replies: 39
Views: 2407

Re: Is the Blackmar-Diemar Gambit playable?

Cerebellum gives -0.29 after 3. e4, which may not even be a draw for white.

-Carl
by clumma
Thu Jul 05, 2018 5:44 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish 180113 - Initial position until depth 70
Replies: 4
Views: 655

Re: Stockfish 180113 - Initial position until depth 70

Give black 1. ... e5, as suggested by Cerebellum, and see what SF thinks.

-Carl
by clumma
Thu Apr 05, 2018 8:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 'ab-initio' piece values
Replies: 17
Views: 2722

Re: 'ab-initio' piece values

hgm wrote:I think those values were derived from game statistics. Not by calculation.
Yes, I think that's right.
by clumma
Thu Apr 05, 2018 7:41 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 'ab-initio' piece values
Replies: 17
Views: 2722

Re: 'ab-initio' piece values

Nobody has mentioned Larry's work on this (which was presumably part of the improvement of Rybka 3). In The Kaufman Repertoire for Black & White, he gives the following values as best for human use minor piece: 3.5 (plus 0.5 for a bishop pair) rook: 5.25 queen: 10 These are different and presumably ...
by clumma
Fri Mar 09, 2018 9:57 pm
Forum: Computer Chess Club: General Topics
Topic: Wilo rating properties from FGRL rating lists
Replies: 47
Views: 9654

Re: Wilo rating properties from FGRL rating lists

For instance, if two opponents (engine A and engine B) hypothetically play a mole of games (6x10^23) and have all draws except 100 and engine A wins all 100, I maintain that the two engines have exactly the same strength for all practical purposes. I do think that's very unlikely, especially if eac...
by clumma
Fri Mar 09, 2018 9:45 pm
Forum: Computer Chess Club: General Topics
Topic: Wilo rating properties from FGRL rating lists
Replies: 47
Views: 9654

Re: Wilo rating properties from FGRL rating lists

I would like to see a chart with Elo and Wilo on x and y axes, with engines as points, for one of Andreas' tournaments. Have you made such a thing? It would be best to include all engines, not just the top 11.

-Carl
by clumma
Fri Mar 09, 2018 9:25 pm
Forum: Computer Chess Club: General Topics
Topic: Wilo rating properties from FGRL rating lists
Replies: 47
Views: 9654

Re: Wilo rating properties from FGRL rating lists

For instance, if two opponents (engine A and engine B) hypothetically play a mole of games (6x10^23) and have all draws except 100 and engine A wins all 100, I maintain that the two engines have exactly the same strength for all practical purposes. I do think that's very unlikely, especially if eac...
by clumma
Fri Mar 09, 2018 7:10 pm
Forum: Computer Chess Club: General Topics
Topic: Wilo rating properties from FGRL rating lists
Replies: 47
Views: 9654

Re: Wilo rating properties from FGRL rating lists

"Solving" a non-problem since playing strength difference between engines (and humans) obviously does shrink with LTC. What is "playing strength" in your understanding? In another thread on intrinsic ratings, it appeared to me that you and I have different conceptions of Elo. For me it is not a sta...
by clumma
Fri Mar 09, 2018 5:58 pm
Forum: Computer Chess Club: General Topics
Topic: Wilo rating properties from FGRL rating lists
Replies: 47
Views: 9654

Re: Wilo rating properties from FGRL rating lists

It seems to me that contempt should always be detrimental in a true strength measurement, where the engine is tested against equal numbers of stronger and weaker opponents. It can only be helpful in a flawed, lopsided measurement, which does not reflect playing strength, but some meaningless artifa...