Search found 7105 matches

by Uri Blass
Fri Jul 23, 2021 6:13 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish: Our lawsuit against ChessBase
Replies: 247
Views: 10974

Re: Stockfish: Our lawsuit against ChessBase

Since it's impossible to reach Stockfish 14 (+100 ELO over commercials Dragon 2.0 and Fat Fritz 2.0, +200 ELO over Ethereal 13 NNUE) the only way to survive for Chessbase is to include Powerbooks 2022 & up to 7-man online tablebases on Fritz 18 if they want to sell their 20 years old GUI for 99€, n...
by Uri Blass
Fri Jul 23, 2021 9:11 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish: Our lawsuit against ChessBase
Replies: 247
Views: 10974

Re: Stockfish: Our lawsuit against ChessBase

Since it's impossible to reach Stockfish 14 (+100 ELO over commercials Dragon 2.0 and Fat Fritz 2.0, +200 ELO over Ethereal 13 NNUE) the only way to survive for Chessbase is to include Powerbooks 2022 & up to 7-man online tablebases on Fritz 18 if they want to sell their 20 years old GUI for 99€, n...
by Uri Blass
Fri Jul 23, 2021 6:25 am
Forum: Computer Chess Club: General Topics
Topic: Where is Father famous anti computer chess player
Replies: 53
Views: 11395

Re: Rated game Threefold repetition

[Event "Blitz 1min"] [Site "?"] [Date "2021.07.22"] [Round "?"] [White "Rated game"] [Black "Restrepo, Pablo"] [Result "1/2-1/2"] [ECO "A90"] [WhiteElo "2570"] [BlackElo "1861"] [PlyCount "129"] [TimeControl "60"] 1. g3 {0} d5 {2} 2. Nf3 {0} e6 {1} 3. d4 {0} f5 {1} 4. c4 {0} Nf6 {1} 5. Bg2 {0 } c6 ...
by Uri Blass
Fri Jul 23, 2021 5:48 am
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1067

Re: stockfish evaluates knight as more than rook

I can add that I have an idea how to calculate distance of unproved mate in the evaluation. Give the engine to play against itself and if one side wins in 32 moves then you have unproved mate in 32. It is better to use an engine that knows to mate the opponent fast so first step to decide which engi...
by Uri Blass
Fri Jul 23, 2021 5:27 am
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1067

Re: stockfish evaluates knight as more than rook

NN evaluations are highly non-linear anyway, so if anything is "stupid" it is expecting NNUE to behave like HCE where terms are additive and piece values dominate. The problem is not that the evaluation is not linear but that the evaluation does not evaluate positions with smaller distance to mate ...
by Uri Blass
Thu Jul 22, 2021 8:34 pm
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1067

Re: stockfish evaluates knight as more than rook

If I remove knight b1 NNUE gives me -1272(-6.12) If I remove both knight b1 and rook a1 NNUE gives me -1271(-6.11) I used the NNUE that latest stockfish developement use. Stupid NNUE and it is better if the stockfish stop to use it. Both evals are about 100% loss chance according to stockfish, so w...
by Uri Blass
Thu Jul 22, 2021 3:14 pm
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1067

Re: stockfish evaluates knight as more than rook

If I remove knight b1 NNUE gives me -1272(-6.12)
If I remove both knight b1 and rook a1 NNUE gives me -1271(-6.11)

I used the NNUE that latest stockfish developement use.
Stupid NNUE and it is better if the stockfish stop to use it.
by Uri Blass
Thu Jul 22, 2021 3:06 pm
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1067

Re: stockfish evaluates knight as more than rook

Just use https://hxim.github.io/Stockfish-Evaluation-Guide/ and go to 'NNUE' then you can see what the net scores each piece in which position. It seems wrong. I see that the value of the knight is 6.2 or 6.1 but I saw that the evaluation after one ply of search was near 12 pawns against white and ...
by Uri Blass
Thu Jul 22, 2021 2:11 am
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1067

stockfish evaluates knight as more than rook

I talk about evaluation and not about search so I let stockfish to search to depth 1 and here are the results(rooks equal near 4.5 pawns when knights equal near 12 pawns). I wonder if the reason is not using nnue with a big material advantage. rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBN1 w Qkq - 0 1 ...
by Uri Blass
Wed Jul 21, 2021 9:38 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Fortress detection?
Replies: 7
Views: 938

Re: Fortress detection?

I do not understand how 4-8 is a legal move in checkers. I know almost nothing about checkers but I know that there is a rule that if you can capture you have to do it so white has to play 15 capture 18 and 26 or 13 capture 17 and 26 or 15 capture 19 based on my knowledge Edit:Maybe it is capturing ...