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After training Brainlearn it has gone from an average of 3 or 4 losses and 6 or 7 draws in a 10 game tournament vs Brainfish to now winning its first 10 game match 1-0-9. I am convinced its learning.

Released BrainLearn 7
https://github.com/amchess/BrainLearn/releases/tag/7
Thanks to the observations by the true testers...
Andrea

LOL

What is the difference between BrainLearn and other learning Stockfish engines?

Brainlearn is the original one.

https://github.com/amchess/BrainLearn/wiki/Tests

BrainLearn 7.1 with LP support on Windows OS:
https://github.com/amchess/BrainLearn/releases/tag/7.1

Does a readme file exist?

Does anyone understand the eval of Brainlearn (syzygy are 5-men)?

[d]8/2Q5/p4kr1/2p5/P3P1p1/2P1R3/3q2P1/6K1 w - - 0 1

Analysis by BrainLearn 7 64 POPCNT:

42.Dxc5 Dc1+ 43.Kh2 g3+ 44.Txg3 Th6+ 45.Th3 Df4+ 46.Kg1 Dc1+ 47.Kf2 Dd2+ 48.Kf3 Txh3+ 49.gxh3 Dd1+ 50.Kg2 Dxa4 51.Kf2 a5 52.Ke3 Da1 53.Dc6+ Ke7 54.Kd4 a4 55.e5 Dc1 56.Df6+ Kd7 57.Df5+ Kc6 58.Kc4 Db2 59.De6+ Kc7 60.Dd6+ Kc8 61.Dc6+ Kd8 62.Dxa4
+/= (0.54 ++) Tiefe: 30/49 00:00:59 178MN, tb=726457

Analysis by Stockfish 11 64 POPCNT:

42.Dxc5 Dc1+ 43.Kh2 g3+ 44.Txg3 Th6+ 45.Th3 Df4+ 46.Kg1 Dc1+ 47.Kf2 Dd2+ 48.Kf3 Txh3+ 49.gxh3 Dd1+ 50.Kg2 Dxa4 51.Kf2 Da1 52.Dc6+ Ke7 53.h4 Dh1 54.Dc5+ Kf7 55.Dd5+ Kg7 56.De5+ Kg8 57.h5 a5 58.Dxa5 Dh2+ 59.Ke3 Dg1+ 60.Kd3 Df1+ 61.Kd4 Dd1+ 62.Kc4 Df1+ 63.Kc5 Df2+ 64.Kd5 Dd2+ 65.Kc4
+- (3.06 --) Tiefe: 30/62 00:01:12 231MN, tb=827827
42.Dxc5 Dc1+ 43.Kh2 g3+ 44.Txg3 Dh6+ 45.Th3 Df4+ 46.Kh1 Df1+ 47.Dg1 Dxg1+ 48.Kxg1 Ke5 49.Th4 Tf6 50.a5 Tf7 51.Th6 Ta7 52.c4 Kxe4 53.Td6 Ta8 54.c5 Ke5 55.Tg6 Ta7 56.Tb6 Ta8 57.Td6 Ta7 58.g3 Ke4 59.c6 Tc7
+- (2.73) Tiefe: 30/62 00:01:13 236MN, tb=840936

Aha, I've beaten people on Playchess that use Brainlearn and I also don't get why they apparently show sub 1.00 scores in a lost position. Perhaps it's a bug? No way I'm using it for games, at least.

I also play on PlayChess (not yet with Brainlearn), and have also seen similar Brainlearn evals. A BUG? I have the game at home, now I'm on the road. But I can post it later.