Search found 147 matches

by clumma
Mon Dec 03, 2018 8:01 pm
Forum: Computer Chess Club: General Topics
Topic: Losing Chess is weakly solved
Replies: 5
Views: 1539

Re: Losing Chess is weakly solved

Guenther wrote:
Sun Dec 02, 2018 8:45 am

...only a bit over 2 years too late - it's more commonly known as 'Suicide Chess'
http://talkchess.com/forum3/viewtopic.p ... ed#p689200
Yes, I noted this possibility in my post. Anyway, the solution has been updated since then.

-Carl
by clumma
Sun Dec 02, 2018 12:34 am
Forum: Computer Chess Club: General Topics
Topic: Losing Chess is weakly solved
Replies: 5
Views: 1539

Losing Chess is weakly solved

Pardon if this has been discussed here before, but it's new to me.

Losing Chess is weakly solved -- 1. e3 wins for white. Site with full details, including an online solution browser

http://magma.maths.usyd.edu.au/~watkins/LOSING_CHESS/

-Carl
by clumma
Thu Jul 05, 2018 5:58 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish 180113 - Initial position until depth 70
Replies: 11
Views: 2787

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: 6360

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: 11
Views: 2787

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: 3913

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: 3913

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: 11945

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: 11945

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: 11945

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...