Search found 546 matches

by chrisw
Sat May 25, 2019 9:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One idea to solve chess?
Replies: 35
Views: 5343

Re: One idea to solve chess?

A neural network is not a piece of magic. there probably is a magic neural network for 8,9,10 and so on egtbs, with the weights set to just the right magic values. There might even be an infinite number of such networks. Problem actually is that (most likely) none can be found by error back propaga...
by chrisw
Sat May 25, 2019 6:21 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One idea to solve chess?
Replies: 35
Views: 5343

Re: One idea to solve chess?

Let's say it was possible. I doubt that one could store the number of weights needed for that network because I dont think current networks arelarge enough to give a perfect answer to any chess position Has anyone tried to compress the data of a 3 men tablebase in a NN and get the same result? That...
by chrisw
Sat May 25, 2019 5:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One idea to solve chess?
Replies: 35
Views: 5343

Re: One idea to solve chess?

I think that if you want to solve chess then you should try to solve. chess engines of today do not try to solve the game and when they say 0.00 people have no idea if they found a forced draw or simply found a line that they evaluate as equal. That’s easily dealt with. Use bit zero to distinguish ...
by chrisw
Wed May 22, 2019 8:31 pm
Forum: Computer Chess Club: General Topics
Topic: Legal status of Eman?
Replies: 13
Views: 1918

Re: Legal status of Eman?

GPL allows anyone to make modifications without releasing source code. What GPL doesn't allow is distributing (in GPLv3 terms, "conveying") binary without making source available. Distribution is not only putting it into publicly available place, but also e.g. sending physical disks by mail by requ...
by chrisw
Wed May 22, 2019 12:47 am
Forum: Computer Chess Club: General Topics
Topic: Bad Bishop win
Replies: 16
Views: 1175

Re: Bad Bishop win

Of course the same thing is true of every chess heuristic. A knight on the rim is dim. Except when it is the best move. Knights before bishops. Except when it is better to move the bishop first. Never develop rooks or queens until after the minor pieces. Except when it is the best thing to do. Piec...
by chrisw
Wed May 22, 2019 12:35 am
Forum: Computer Chess Club: General Topics
Topic: Bad Bishop win
Replies: 16
Views: 1175

Re: Bad Bishop win

As to 'there is no "correct"': 1. One definition of correct would be that it gains Elo in the desired environment of play. 2. Another definition of correct is that it causes more good decisions in analysis than bad decisions. As to whether it is correct by either of these definitions or some other ...
by chrisw
Wed May 22, 2019 12:17 am
Forum: Computer Chess Club: General Topics
Topic: Bad Bishop win
Replies: 16
Views: 1175

Re: Bad Bishop win

Some internet goo on good and bad bishops: Good vs Bad A good bishop is on the opposite color as its pawns. A bad bishop is on the same color as its pawns. For example if the white pawn structure is c3, d4, e3, f4, then the light squared bishop is the good bishop and the dark squared bishop is the ...
by chrisw
Tue May 21, 2019 8:12 pm
Forum: Computer Chess Club: General Topics
Topic: Bad Bishop win
Replies: 16
Views: 1175

Re: Bad Bishop win

This is a weird win by Lc0 when it had bad bishop against SF10. Two pawns were also given up by Lc0 for some tiny compensation that's uncrompehensible to mere mortals. [d]2r3k1/3qbp1p/p3p1pP/P2pP3/2rP4/5NP1/2nBQPK1/2RR4 b - - 0 26 Not sure if SF have this bad bishop code in its eval function. Notic...
by chrisw
Tue May 21, 2019 3:34 pm
Forum: Computer Chess Club: General Topics
Topic: Bad Bishop win
Replies: 16
Views: 1175

Re: Bad Bishop win

This is a weird win by Lc0 when it had bad bishop against SF10. Two pawns were also given up by Lc0 for some tiny compensation that's uncrompehensible to mere mortals. [d]2r3k1/3qbp1p/p3p1pP/P2pP3/2rP4/5NP1/2nBQPK1/2RR4 b - - 0 26 Not sure if SF have this bad bishop code in its eval function. Notic...
by chrisw
Tue May 21, 2019 2:29 pm
Forum: Computer Chess Club: General Topics
Topic: How to get the "usual" Multi PV with MCTS engines?
Replies: 12
Views: 1373

Re: How to get the "usual" Multi PV with MCTS engines?

I want already to rewrite the basis of the opening theory using Lc0, being an 1700 Elo player :lol:. Now, a bit more seriously, I am confident that late nets of the T30 and T40 runs are VERY strong in the openings (provably MUCH stronger than any standard AB engine). So, I let Lc0 21.2rc1 with a go...