Search found 6302 matches

by Uri Blass
Tue Jan 22, 2019 6:17 pm
Forum: Computer Chess Club: General Topics
Topic: " End of an Era" is coming?
Replies: 64
Views: 5300

Re: " End of an Era" is coming?

Next CCC tournament is 1+2. My bet is Leela will beat SF in Bullet. In their hardware SF is approx +20 elo stronger in 30+5 TC, but in 1+2 Bullet Leela will be approx +20 elo stronger. (Expecting end of an era in bullet at least) I do not consider it end of an era when the programs do not use equal...
by Uri Blass
Tue Jan 22, 2019 2:22 pm
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 781

Re: Schizophrenic rating model for Leela

Transitivity is pretty well obeyed by regular engines, I even came to pretty conclusive results that on large Elo spans it obeys the logistic and not Gaussian distribution. Some 2-3 years ago this was unclear to me. I am not sure what you mean by "ratings in engine-to-engine Elo lists get compresse...
by Uri Blass
Mon Jan 21, 2019 7:24 pm
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 781

Re: Schizophrenic rating model for Leela

If we assume that a regular engine sees Leela as a schizophrenic, or a double personality engine, the scores one gets of regular engines against Leela can be explained by the usual Elo logistic. And an "Elo" rating can be defined for Leela, we will call it Elo_of_Leela, although Leela in a pool of ...
by Uri Blass
Mon Jan 21, 2019 9:18 am
Forum: Computer Chess Club: General Topics
Topic: Antifish vs Stockfish in cccc
Replies: 14
Views: 1086

Re: Antifish vs Stockfish in cccc

The next CCC event is 4 days of Stockfish vs Lc0 (Antifish) Some testing results say Antifish ( Leela derivative training with Stockfish games , rather than self played games like Leela) is as strong as Leela. Who will win? I expect antifish to win because it designed to win against stockfish if I ...
by Uri Blass
Sat Jan 19, 2019 1:52 pm
Forum: Computer Chess Club: General Topics
Topic: program to generare epd file of tactical exercises from pgn
Replies: 13
Views: 262

Re: program to generare epd file of tactical exercises from pgn

Here is an example that is easy for computers but not for weak humans(the woman with white solved it correctly). 2b2rk1/1p4b1/3p3p/3Pnpq1/1P1Np3/1Q2P1P1/3N1nB1/B1R3K1 w - - 0 23 find the best move for white. Is there a best move if all move choices lose? I think the game is already lost at that poi...
by Uri Blass
Sat Jan 19, 2019 1:34 pm
Forum: Computer Chess Club: General Topics
Topic: program to generare epd file of tactical exercises from pgn
Replies: 13
Views: 262

Re: program to generare epd file of tactical exercises from pgn

1)good moves in the pgn that are significantly stronger than the second best move Every sequence of trading pieces fit that description, you need more filters. ChessTricks uses similar filters, you might find it useful for this. https://chesstricksapp.wordpress.com Every sequence of trading pieces ...
by Uri Blass
Sat Jan 19, 2019 4:59 am
Forum: Computer Chess Club: General Topics
Topic: program to generare epd file of tactical exercises from pgn
Replies: 13
Views: 262

Re: program to generare epd file of tactical exercises from pgn

Here is an example that is easy for computers but not for weak humans(the woman with white solved it correctly). 2b2rk1/1p4b1/3p3p/3Pnpq1/1P1Np3/1Q2P1P1/3N1nB1/B1R3K1 w - - 0 23 find the best move for white. Is there a best move if all move choices lose? I think the game is already lost at that poi...
by Uri Blass
Fri Jan 18, 2019 10:58 pm
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 2296

Re: Can somebody explain what makes Leela as strong as Komodo?

Leela, lcz wins because it has no AB search. It uses a different search and a different evaluation. That makes it difficult for AB programs to find out what it is planning. It's like chess in a parallel universe. It's very difficult to find out for the AB animal. You can call it paradigm change But...
by Uri Blass
Fri Jan 18, 2019 8:15 pm
Forum: Computer Chess Club: General Topics
Topic: program to generare epd file of tactical exercises from pgn
Replies: 13
Views: 262

Re: program to generare epd file of tactical exercises from pgn

You can easily turn a chess game into EPD records with pgn2fen <file.pgn> -e -l > <file.epd> Now you can take a chess engine, or series of chess engines and analyze the whole game a ply at a time on multi-pv. Something to watch for is a jump in eval from one ply to the next. That always means eithe...
by Uri Blass
Fri Jan 18, 2019 7:54 pm
Forum: Computer Chess Club: General Topics
Topic: Looking for a tactical test suite
Replies: 11
Views: 348

Re: Looking for a tactical test suite

It is incredibly difficult to produce a tactical test suite with 1000 positions which is thoroughly debugged. Even 100 positions is rather difficult. For instance, what if the line is confirmed by several top engines ? I have done that. I worked with Swaminathan in verification of the STS test suit...