Altair is a uci chess engine that succeeds my old python engine Antares.
Rating CEDR=3109 author: Alexander Tian
v.5.0.0:
This is the fifth and final HCE (Hand Crafted Evaluation) version of Altair. The next planned release will introduce Neural Networks.
Altair has experienced a large rewrite of its board representation, move generation, and evaluation in order to incorporate bitboards in this version. Along with the introduction of bitboards, Altair has had many search patches which contribute to its strength improvements.
Standard Chess LTC
ELO | 121.85 +- 15.29 (95%)
CONF | 40.0+0.40s Threads=1 Hash=128MB
GAMES | N: 1000 W: 418 L: 81 D: 501
https://chess.swehosting.se/test/3975/
FRC / Chess960 LTC
ELO | 138.18 +- 17.37 (95%)
CONF | 40.0+0.40s Threads=1 Hash=128MB
GAMES | N: 1000 W: 491 L: 113 D: 396
https://chess.swehosting.se/test/3980/
Major thanks to @archishou and @Ciekce for helping me with the bitboard rewrite of Altair. And per usual, much thanks to everyone here OB testing instance for contributing resources towards Altair's testing.
The binaries are included below, with windows binaries being based on the microarchitecture levels
It is recommended that most people use the v3 binary, with v4 meant for CPUs that support AVX512, and v2 and v1 for older CPUs.
Rating CEDR progres - Altair:
| Pl | Engine | Rating | Score | Games | % |
| 850 | Altair 4.0.0 | 3109.7 | 136.50 | 270 | 50.56 |
| 856 | Altair 3.0.0 | 3100.0 | 118.50 | 202 | 58.66 |
| 1004 | Altair 2.0.0 | 2905.9 | 108.00 | 280 | 38.57 |
| 1239 | Altair 1.0.0 | 2513.0 | 42.50 | 105 | 40.48 |
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