After installing Brainlearn 25, I started the engine in analysis mode.
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The engine created a learning file.
After that, I played some games in offline mode as a human against Brainlearn 25.
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The CTG book is empty and Brainlearn 25 is playing with a BIN short book.
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Now the experience file is 2 kb, before it was only 1 kb.
After that I went to the PlayChess server, and Brainlearn 25 played 7 games with the same BIN book and settings.
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After 7 games, the learning file is still only 2 kb in size. This is not normal. Apparently Brainlearn 25 does not learn on PlayChess. The date + time of the last exp entry had not changed although I played online for about 30 minutes.
Download all test-games in PGN:
https://pixeldrain.com/u/HNzEThW4
Example PGN: Here you can see that the BIN book is used ( 3. Bb5 {B 0} Nf6 {0.01/0 0} ). After 7 games the exp file should be more than just 2 kb.
[Event "Rated game, 5 min"]
[Site "Engine Room"]
[Date "2023.06.24"]
[Round "?"]
[White "JML26, Zeus 50.1"]
[Black "SolistaChess, Brainlearn 25"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "3123"]
[BlackElo "3114"]
[Annotator "0.02;0.05"]
[PlyCount "87"]
[EventDate "2023.06.24"]
[SourceTitle "playchess.com"]
[TimeControl "300"]
{Zeus 50.1 (16 cores): 62.7 plies; 25.395kN/s AMD Ryzen 9 5950X 16-Core Processor 3394MHz, (16 cores, 32 threads), empty.ctg, 1024 MB} 1. e4 {B 0} e5 {0.01/0 0} 2. Nf3 {B 0} Nc6 {0.01/0 0} 3. Bb5 {B 0} Nf6 {0.01/0 0} 4. O-O {B 0} Nxe4 {0.01/0 0} 5. d4 {B 0} Nd6 {0.01/0 0} 6. Bxc6 {B 0} dxc6 {0.01/0 0} 7. dxe5 {B 0} Nf5 {0.01/0 0} 8. Qxd8+ {B 0} Kxd8 {0.01/0 0} 9. h3 {B 0} Be7 {0.01/0 0} 10. Nc3 {B 0} Nh4 {0.01/0 0} 11. Nxh4 {B 0} Bxh4 {0.01/0 0} 12. Be3 {B 0} Bd7 {0.01/0 0} 13. g4 {B 0} b6 {0.05/33 8} 14. f4 {B 0 (Ne4)} h5 {0.00/31 4} 15. g5 {B 0 (f5)} Bf5 {0.27/45 40} 16. Kh2 {B 0} Re8 {0.25/39 2} 17. Ne2 {B 0} c5 {0.22/37 5} 18. Ng1 {B 0} Be4 {0.20/36 4} 19. Nf3 {B 0} Bxf3 {0.19/37 4} 20. Rxf3 {B 0} f6 {0.19/40 3} 21. exf6 {B 0} gxf6 {0.14/35 6} 22. Rg1 {B 0} Kd7 {0.12/30 4} 23. Rg2 {B 0} fxg5 {0.08/36 3} 24. fxg5 {B 0} Rf8 {0.06/37 3} 25. Rxf8 {B 0} Rxf8 {0.05/36 3} 26. Kg1 {B 0} Rf3 {0.04/37 6} 27. g6 {B 0} Rf8 {0.04/47 3} 28. Bg5 {B 0 (Bf4)} Bxg5 {0.03/42 9} 29. Rxg5 {B 0} Rg8 {0.02/37 3} 30. a3 {B 0 (h4)} Ke6 {0.01/54 3} 31. Kf2 {B 0} Kf6 {0.01/49 5} 32. Rxh5 {B 0} Kxg6 {0.00/52 9} 33. Rh4 {B 0 (Re5)} Rd8 {0.00/53 3} 34. Rg4+ {B 0 (Re4)} Kf5 {0.00/53 6} 35. Kg3 {B 0 (Kf3)} Rd1 {0.00/51 3} 36. Rf4+ {B 0} Kg5 {0.00/53 4} 37. h4+ {B 0} Kh5 {0.00/58 2} 38. Rf5+ {0.02/51 9} Kg6 {0.00/55 0} 39. Rg5+ {0.00/64 3 (Rf2)} Kh6 {0.00/55 3 (Rg6-f6)} 40. Rg4 {0.00/73 4} Rc1 {0.00/53 0 (Td1-a1)} 41. Rc4 {0.00/71 4} Kh5 {0.00/51 0 SolistaChess,Brainlearn 25 offers a draw} 42. b3 {0.00/68 4} a5 {0.00/54 0} 43. Kf3 {0.00/77 3 (a4)} Rf1+ {0.00/62 3 (Tc1-h1)} 44. Ke3 {0.00/62 3 (Ke4)} 1/2-1/2