Arasan - UCI engines Author: Jon Dart
Rating CEDR (15'+10") =3303 Rating CEDR (3'+3") =3244
Arasan, an open source engine written by Jon Dart in C++. Arasan's development started in the early 90s, the first version, released in 1994 was a 16-bit program running under Windows 3.1 using an 8x8 Board, incremental updated attack tables and its own GUI, evolving to a portable 32-bit and later 64-bit program, utilizing bitboards to determine its sliding piece attacks with rotated bitboard lookups. In 2008, rotated were replaced by Magic bitboards, which gave Arasan about a 20-25% speedup.
Despite its own GUI, Arasan early supported the Chess Engine Communication Protocol and later UCI as well, to run under Windows, Linux and Mac OS. The latest version of Arasan and all major versions, including Version 1.0 from March 1994, are available as source code from the Arasan.org site. Jon's change logs, bug fix reports and tournament reports over the time are available from forum archives, as well the recent ones from the Arasan blog. (source - Chess Programming Wiki)
Individual statistics: Arasan 23.3 - 250 games (+ 84,=130,- 36), 59.6 % (Time:15'+10")
Ethereal 12.75 NNUE : 2 (+ 0,= 2,- 0), 50.0 %
Fritz 17 : 6 (+ 1,= 5,- 0), 58.3 %
Gogobello 3.0 : 2 (+ 0,= 2,- 0), 50.0 %
Xiphos 0.6.1 : 2 (+ 0,= 2,- 0), 50.0 %
Laser 1.7 : 2 (+ 2,= 0,- 0), 100.0 %
RofChade 2.3 : 2 (+ 1,= 1,- 0), 75.0 %
Booot 6.5 : 2 (+ 1,= 1,- 0), 75.0 %
Defenchess 2.3 : 2 (+ 0,= 2,- 0), 50.0 %
Roc 2020Aug05 : 2 (+ 2,= 0,- 0), 100.0 %
Andscacs 0.95092 : 2 (+ 1,= 1,- 0), 75.0 %
Zeus 11.0 : 2 (+ 0,= 1,- 1), 25.0 %
MadChess 3.0 : 2 (+ 2,= 0,- 0), 100.0 %
Weiss 2.0 : 2 (+ 0,= 2,- 0), 50.0 %
Colossus 2021b : 1 (+ 1,= 0,- 0), 100.0 %
Stockfish 14.1 : 7 (+ 0,= 4,- 3), 28.6 %
Stockfish 13 : 2 (+ 0,= 2,- 0), 50.0 %
Fisherov 0.98i : 2 (+ 0,= 1,- 1), 25.0 %
Fisherov 0.98j : 10 (+ 0,= 8,- 2), 40.0 %
Kayra 1.1 : 2 (+ 0,= 1,- 1), 25.0 %
Fritz 15 : 5 (+ 4,= 1,- 0), 90.0 %
Deep Shredder 13 : 1 (+ 0,= 1,- 0), 50.0 %
Eman 7.80 : 1 (+ 0,= 0,- 1), 0.0 %
Blue Marlin 14.8 : 1 (+ 0,= 1,- 0), 50.0 %
Dragon 2.6.1 : 5 (+ 0,= 1,- 4), 10.0 %
Nalwald 15 : 1 (+ 1,= 0,- 0), 100.0 %
Leorik 1.0 : 2 (+ 2,= 0,- 0), 100.0 %
Raubfisch X48d3 : 1 (+ 0,= 1,- 0), 50.0 %
Toga IV : 2 (+ 1,= 1,- 0), 75.0 %
RubiChess 20220223 : 2 (+ 0,= 2,- 0), 50.0 %
Rebel 14.2 : 4 (+ 1,= 3,- 0), 62.5 %
Dumb 1.9 : 3 (+ 2,= 1,- 0), 83.3 %
Lozza 2.2 : 8 (+ 8,= 0,- 0), 100.0 %
BrainLearn 16.1 : 2 (+ 0,= 2,- 0), 50.0 %
ShashChess 21.1 : 2 (+ 0,= 2,- 0), 50.0 %
Little Goliath 3.15.4 : 2 (+ 1,= 1,- 0), 75.0 %
Koivisto 8.0 : 16 (+ 0,= 14,- 2), 43.8 %
Frozenight 2.0.0 : 2 (+ 2,= 0,- 0), 100.0 %
Halogen 10.23.11 : 2 (+ 0,= 2,- 0), 50.0 %
Koivisto 7.22 Ipman : 2 (+ 0,= 2,- 0), 50.0 %
Mayhem 6.9 : 4 (+ 1,= 3,- 0), 62.5 %
Caissa 0.5 : 8 (+ 2,= 6,- 0), 62.5 %
Velvet 3.3.0 : 2 (+ 1,= 1,- 0), 75.0 %
Koivisto 8.1 Ipman : 4 (+ 0,= 2,- 2), 25.0 %
Princhess 0.7.0 : 6 (+ 6,= 0,- 0), 100.0 %
Stockfish 190322 : 2 (+ 0,= 1,- 1), 25.0 %
Vafra 3.3.1 : 6 (+ 3,= 3,- 0), 75.0 %
Walleye 1.6.0 : 8 (+ 8,= 0,- 0), 100.0 %
Stockfish 200322 Ivec : 2 (+ 0,= 2,- 0), 50.0 %
CorChess 200322 : 2 (+ 0,= 1,- 1), 25.0 %
Frozenight 2.1.0 : 2 (+ 1,= 1,- 0), 75.0 %
Kayra 1.2 : 7 (+ 0,= 4,- 3), 28.6 %
Stockfish 250322 : 2 (+ 0,= 0,- 2), 0.0 %
Black Marlin 5.0 : 1 (+ 1,= 0,- 0), 100.0 %
Koivisto 8.4 : 1 (+ 0,= 1,- 0), 50.0 %
ProteusSF 006 : 1 (+ 0,= 1,- 0), 50.0 %
Stockfish 010422 Ivec : 2 (+ 0,= 1,- 1), 25.0 %
Avalanche 0.2 : 1 (+ 1,= 0,- 0), 100.0 %
Kayra 1.3 : 1 (+ 0,= 1,- 0), 50.0 %
Stockfish 280322 : 3 (+ 0,= 2,- 1), 33.3 %
Sting 28 : 2 (+ 1,= 1,- 0), 75.0 %
Inanis 1.0.1 : 3 (+ 3,= 0,- 0), 100.0 %
Raubfisch X48 : 2 (+ 0,= 1,- 1), 25.0 %
Mayhem 7.1 : 3 (+ 3,= 0,- 0), 100.0 %
Koivisto 8.6 : 2 (+ 0,= 2,- 0), 50.0 %
Houdidit 6.03 : 2 (+ 0,= 2,- 0), 50.0 %
ProteusSF 005 : 3 (+ 0,= 1,- 2), 16.7 %
Blue Marlin 14.9 : 4 (+ 0,= 2,- 2), 25.0 %
ProteusSF JBE 007 : 3 (+ 0,= 2,- 1), 33.3 %
Fatalii 0.1.2 : 3 (+ 3,= 0,- 0), 100.0 %
CorChess 180422 : 5 (+ 0,= 5,- 0), 50.0 %
Wasp 5.50 : 5 (+ 3,= 2,- 0), 80.0 %
Horowitz 1.0.0 : 2 (+ 2,= 0,- 0), 100.0 %
Frozenight 3.0.1 : 2 (+ 2,= 0,- 0), 100.0 %
Stockfish 15 : 5 (+ 0,= 4,- 1), 40.0 %
Crystallite 1.1a : 2 (+ 0,= 1,- 1), 25.0 %
Orion 0.9 : 5 (+ 4,= 1,- 0), 90.0 %
Pigeon 1.5.1 fix : 2 (+ 2,= 0,- 0), 100.0 %
Avalanche 0.2.1 : 2 (+ 2,= 0,- 0), 100.0 %
Clover 3.1 : 2 (+ 0,= 2,- 0), 50.0 %
Stockfish 220422 : 2 (+ 0,= 1,- 1), 25.0 %
Stockfish 120422 : 2 (+ 0,= 1,- 1), 25.0 %
GOOB 1.0 : 2 (+ 2,= 0,- 0), 100.0 %
Hiarcs 15.5 : 2 (+ 0,= 2,- 0), 50.0 %
Other versions (GUI, Mac and Linux) on page: https://www.arasanchess.org
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