Rating CEDR=3725
BrainLearn is a free, powerful UCI chess engine derived from BrainFish. It is not a complete chess program and requires a UCI-compatible GUI (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena, Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably.
Read the documentation for your GUI of choice for information about how to use Stockfish with it.
BrainLearn 26 - download
v.26:
Fixed learning
Stockfish patch Oct14, 2023
Use more continuation histories.
This patch allows stats updates and movepicker bonuses for continuation history 3 plies deep - so counter counter move.
Updates and movepicker usage are done with 1/4 multiplier compared to other histories.
Rating CEDR progress - BrainLearn
| Pl | Engine | Rating | Score | Games | % |
| 95 | BrainLearn 20 | 3725.6 | 321.00 | 490 | 65.51 |
| 110 | Brainlearn 23.1 | 3723.8 | 284.50 | 450 | 63.22 |
| 113 | Brainlearn 25.1 | 3723.7 | 65.00 | 104 | 62.50 |
| 120 | Brainlearn 25 | 3722.9 | 68.00 | 116 | 58.62 |
| 138 | BrainLearn 21.1 | 3721.5 | 546.50 | 840 | 65.06 |
| 142 | Brainlearn 24 | 3721.2 | 219.00 | 380 | 57.63 |
| 181 | BrainLearn 19 | 3718.6 | 154.00 | 259 | 59.46 |
| 211 | BrainLearn 22 | 3716.6 | 259.00 | 435 | 59.54 |
| 220 | Brainlearn 25.2 | 3716.0 | 605.50 | 1113 | 54.40 |
| 309 | BrainLearn 19.2.1 | 3711.2 | 79.00 | 118 | 66.95 |
| 336 | BrainLearn 19.1 | 3708.7 | 51.00 | 84 | 60.71 |
| 356 | BrainLearn 19.2 | 3707.2 | 54.00 | 78 | 69.23 |
| 388 | BrainLearn 20.2 | 3703.9 | 280.50 | 458 | 61.24 |
| 401 | BrainLearn 18 | 3702.2 | 209.00 | 336 | 62.20 |
| 420 | BrainLearn 061122 | 3700.0 | 50.00 | 96 | 52.08 |
| 437 | BrainLearn 20.1 vulkan | 3696.2 | 97.00 | 146 | 66.44 |
| 460 | BrainLearn 17 | 3691.4 | 150.00 | 264 | 56.82 |
| 483 | BrainLearn 21 | 3682.6 | 101.50 | 148 | 68.58 |
| 542 | BrainLearn 9.0 | 3627.1 | 13.50 | 18 | 75.00 |
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