Chess engine: Caissa 1.16
Caissa - UCI chess engine, Author: Michał Witanowski
Rating CEDR=3663
v.1.16:
Progression test
TC=10+0.1, Book=UHO_4060_v2.epd
Elo | 36.65 +- 4.71 (95%)
Conf | 10.0+0.10s Threads=1 Hash=16MB
Games | N: 10000 W: 2917 L: 1866 D: 5217
Penta | [25, 788, 2387, 1711, 89]
TC=60+0.6, Book=UHO_4060_v2.epd
Elo | 34.15 +- 7.41 (95%)
Conf | 60.0+0.60s Threads=1 Hash=128MB
Games | N: 3848 W: 1065 L: 688 D: 2095
Penta | [4, 276, 991, 645, 8]
TC=10+0.1, Book=DFRC.epd
Elo | 27.03 +- 7.27 (95%)
Conf | 10.0+0.10s Threads=1 Hash=16MB
Games | N: 3568 W: 866 L: 589 D: 2113
Penta | [23, 311, 879, 508, 63]
Changes
New neural net trained on total 6.9B positions. Introduced high quality games from SPRT tests to the dataset (~350M positions).
SPSA parameter tuning at long time controls
Eval correction improvements
Smaller transposition table entries
Few speedups (around 4% in total)
Various search improvements
Caissa - Rating CEDR progress:
| Pl | Engine | Rating | Score | Games | % |
| 648 | Caissa 1.15 | 3663.1 | 281.50 | 453 | 62.14 |
| 676 | Caissa 1.14.1 | 3633.8 | 490.50 | 901 | 54.44 |
| 690 | Caissa 1.13 | 3611.2 | 37.50 | 72 | 52.08 |
| 695 | Caissa 1.13.1 | 3606.1 | 764.00 | 1272 | 60.06 |
| 730 | Caissa 1.12 | 3577.5 | 520.00 | 898 | 57.91 |
| 738 | Caissa 1.10 | 3569.0 | 180.00 | 326 | 55.21 |
| 739 | Caissa 1.11 | 3568.0 | 241.50 | 376 | 64.23 |
| 755 | Caissa 1.8 | 3536.0 | 506.00 | 902 | 56.10 |
| 776 | Caissa 1.7 | 3508.5 | 221.50 | 354 | 62.57 |
| 779 | Caissa 1.9 | 3501.6 | 80.00 | 182 | 43.96 |
| 825 | Caissa 1.6.3 | 3449.3 | 196.00 | 449 | 43.65 |
| 846 | Caissa 1.5 | 3422.5 | 249.50 | 573 | 43.54 |
| 847 | Caissa 0.5 NNUE | 3420.0 | 159.50 | 260 | 61.35 |
| 849 | Caissa 1.4 | 3415.9 | 535.00 | 1279 | 41.83 |
| 862 | Caissa 1.1 | 3398.4 | 91.50 | 175 | 52.29 |
| 864 | Caissa 1.2 | 3393.2 | 76.50 | 182 | 42.03 |
| 870 | Caissa 1.3 | 3387.0 | 237.50 | 667 | 35.61 |
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