Altair is a uci chess engine that succeeds my old python engine Antares.
Rating CEDR=3086 author: Alexander Tian
v.4.0.0:
This is the fourth version of Altair. Altair now supports Fischer Random Chess (Chess 960) by toggling the UCI option.
Compared to previous releases, this release is not as major, and this is due to the release marking the final version of Altair using an internal mailbox-based board representation. Due to the mailbox-based board representation, Altair is comparatively slow and has much more potential utilizing bitboards.
Altair is now at an estimated 3080 Elo, and almost all the patches since v3.0.0 have been search or time management related.
Self-play LTC (60+0.6) test:
ELO | 85.41 +- 13.46 (95%)
CONF | 40.0+0.40s Threads=1 Hash=128MB
GAMES | N: 1000 W: 320 L: 79 D: 601
Individual statistics: Altair 2.0.0 - 280 games (+ 85,= 46,-149), 38.6 %
Critter 1.6a : 12 (+ 0,= 5,- 7), 20.8 %
Devel 4.0.2.3 : 1 (+ 0,= 1,- 0), 50.0 %
Zahak 10.0 : 2 (+ 0,= 0,- 2), 0.0 %
Cosette 5.1 : 1 (+ 1,= 0,- 0), 100.0 %
Hopper 1.7 : 2 (+ 2,= 0,- 0), 100.0 %
Fisherov chess monk 1.2 : 4 (+ 0,= 0,- 4), 0.0 %
Demolito 2021-10-21 : 1 (+ 0,= 0,- 1), 0.0 %
Beef 0.3.6 : 1 (+ 1,= 0,- 0), 100.0 %
Popochin 4.3 : 1 (+ 1,= 0,- 0), 100.0 %
Nalwald 16 : 1 (+ 0,= 0,- 1), 0.0 %
Ceibo 0.9 : 1 (+ 0,= 0,- 1), 0.0 %
Dumb 1.11 : 1 (+ 0,= 1,- 0), 50.0 %
CDrill 2000 : 2 (+ 2,= 0,- 0), 100.0 %
MadChess 3.2 beta : 2 (+ 2,= 0,- 0), 100.0 %
Stockfish 15.1 : 2 (+ 0,= 0,- 2), 0.0 %
Axon 0.2 : 2 (+ 2,= 0,- 0), 100.0 %
Rebel 16.2 : 2 (+ 0,= 0,- 2), 0.0 %
YuliGM PrO 5.0 : 2 (+ 0,= 0,- 2), 0.0 %
Clovis III : 2 (+ 0,= 2,- 0), 50.0 %
Caissa 1.7 : 2 (+ 0,= 0,- 2), 0.0 %
Leorik 2.4 : 4 (+ 1,= 2,- 1), 50.0 %
Peacekeeper 1.3 : 2 (+ 1,= 0,- 1), 50.0 %
Viridithas 8.1.0 : 2 (+ 0,= 0,- 2), 0.0 %
Eman 8.90 : 4 (+ 0,= 0,- 4), 0.0 %
CfishNN 20230329 : 4 (+ 0,= 0,- 4), 0.0 %
Deep Blue 230329 : 2 (+ 0,= 0,- 2), 0.0 %
CorChess 20230401 : 2 (+ 0,= 0,- 2), 0.0 %
Arasan 23.5 : 14 (+ 0,= 1,- 13), 3.6 %
Knightx 3.7b : 14 (+ 9,= 4,- 1), 78.6 %
Mayhem 8.1 : 12 (+ 6,= 3,- 3), 62.5 %
Lc0 0.30.0-dev+git.9a205320 : 4 (+ 0,= 0,- 4), 0.0 %
Polaris 1.4.1 : 8 (+ 6,= 1,- 1), 81.2 %
Polyfish 20230402 : 4 (+ 0,= 0,- 4), 0.0 %
Svart 3 : 4 (+ 1,= 1,- 2), 37.5 %
Tenax 0.7.7 : 8 (+ 0,= 1,- 7), 6.2 %
BrainLearn 23.1 : 4 (+ 0,= 0,- 4), 0.0 %
Jangine 2023-03-31 : 10 (+ 10,= 0,- 0), 100.0 %
Midnight 5.0 : 8 (+ 6,= 2,- 0), 87.5 %
MrBob 1.2.0 : 10 (+ 0,= 4,- 6), 20.0 %
Polyfish 20230410 : 4 (+ 0,= 0,- 4), 0.0 %
Renegade 0.10.0 : 6 (+ 4,= 2,- 0), 83.3 %
RubiChess 20230410 : 6 (+ 0,= 0,- 6), 0.0 %
AI 28.0 : 4 (+ 0,= 0,- 4), 0.0 %
ShashChess 31.1 : 4 (+ 0,= 1,- 3), 12.5 %
Zangdar 2.14.06 : 6 (+ 4,= 2,- 0), 83.3 %
Svart 3.1 : 6 (+ 1,= 3,- 2), 41.7 %
Willow 2.7 : 6 (+ 3,= 2,- 1), 66.7 %
Akimbo 0.2.0 : 8 (+ 7,= 1,- 0), 93.8 %
Clover 4.0 : 6 (+ 0,= 0,- 6), 0.0 %
Corchess 20230410 : 2 (+ 0,= 0,- 2), 0.0 %
Zangdar 2.15.03 : 1 (+ 0,= 1,- 0), 50.0 %
Polaris 1.5.0 : 1 (+ 1,= 0,- 0), 100.0 %
Caissa 1.8 : 4 (+ 0,= 0,- 4), 0.0 %
CorChess dev-20230504 : 2 (+ 0,= 0,- 2), 0.0 %
Bagatur 3.7c : 2 (+ 0,= 0,- 2), 0.0 %
Midnight 6 : 2 (+ 1,= 1,- 0), 75.0 %
ShashChess GZ : 2 (+ 0,= 0,- 2), 0.0 %
4ku 3.0 : 2 (+ 2,= 0,- 0), 100.0 %
Kuma 1.1 : 2 (+ 0,= 0,- 2), 0.0 %
Ippolit 051323 : 2 (+ 0,= 0,- 2), 0.0 %
Velvet 5.2.0 : 2 (+ 0,= 0,- 2), 0.0 %
Willow 2.8 : 2 (+ 1,= 0,- 1), 50.0 %
TheBaron 3.45 : 2 (+ 0,= 1,- 1), 25.0 %
Clover 4.1 : 2 (+ 0,= 1,- 1), 25.0 %
Akimbo 0.3.0 : 2 (+ 0,= 1,- 1), 25.0 %
Eubos 2.21 : 2 (+ 2,= 0,- 0), 100.0 %
Fire 5192023 : 4 (+ 0,= 1,- 3), 12.5 %
Princhess 0.11.0 : 2 (+ 2,= 0,- 0), 100.0 %
QuintBot 1.2.0 : 2 (+ 2,= 0,- 0), 100.0 %
StoneChess 2023-05-20 : 4 (+ 4,= 0,- 0), 100.0 %
Fire-zero 5192023 : 2 (+ 0,= 0,- 2), 0.0 %
Flounder 0.5.0.0 : 2 (+ 0,= 1,- 1), 25.0 %
ShashChess 32 : 2 (+ 0,= 0,- 2), 0.0 %
Crystal 6 PMT : 2 (+ 0,= 0,- 2), 0.0 %
Fire Zero 5192023 : 2 (+ 0,= 0,- 2), 0.0 %
Stockfish dev-20230520 : 2 (+ 0,= 0,- 2), 0.0 %
nIPPOLIT : 2 (+ 0,= 0,- 2), 0.0 %
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