Fire, (Firebird, Fire xTreme) - an UCI compliant chess engine by Norman Schmidt, until version 3.0 derived from IvanHoe and the Ippolit series of programs with some help of Milos Stanisavljevic.
Initially called Firebird, and later renamed to Fire due to a trademark naming conflict, it was released as open source, Fire licensed under the GNU GPL. The sources were later closed with Windows executables available for download for recent Intel processors.
Fire features magic bitboards, it can be configured with more than 70 UCI options, and applies a SMP parallel search. Since April 2021 with Fire 8.1, the program is open source again. (source).
Fire 8
Fire 8 with smaller and highly tuned evaluation was released on Februray 23, 2021. The further optimized Fire 8.1 was released on April 16, 2021 as open source, licensed under the GNU GPL. Fire_8.N, released on May 22, 2021, features NNUE by utilizing a modified version of Daniel Shawul's ScorpioNNUE probing code along with a reinforcement learning net created by Sergio Vieri. (source)
Individual statistics: Fire 8 NN MC.3 - 301 games (+ 65,=196,- 40), 54.2 %
SlowChess 2.7 : 4 (+ 1,= 3,- 0), 62.5 %
Komodo 12.1.1 : 10 (+ 3,= 7,- 0), 65.0 %
Fisherov 0.98e : 2 (+ 0,= 1,- 1), 25.0 %
Ethereal 12.75 NNUE : 6 (+ 3,= 3,- 0), 75.0 %
RubiChess 2.2 : 4 (+ 2,= 2,- 0), 75.0 %
Fritz 17 : 2 (+ 2,= 0,- 0), 100.0 %
Stockfish 14 : 2 (+ 0,= 2,- 0), 50.0 %
SugaR AI 2.40 : 4 (+ 0,= 1,- 3), 12.5 %
Raubfisch X47b : 2 (+ 0,= 1,- 1), 25.0 %
Lc0 0.28.0 : 4 (+ 1,= 3,- 0), 62.5 %
Berserk 4.5.1 : 2 (+ 1,= 1,- 0), 75.0 %
Dragon 2 : 2 (+ 0,= 2,- 0), 50.0 %
Pedone 3.1 : 8 (+ 1,= 7,- 0), 56.2 %
Gogobello 3.0 : 4 (+ 1,= 3,- 0), 62.5 %
Igel 3.0.5 : 4 (+ 0,= 4,- 0), 50.0 %
Nemorino 6.00 Patch 1 : 2 (+ 1,= 1,- 0), 75.0 %
Booot 6.5 : 2 (+ 1,= 1,- 0), 75.0 %
Cheng4 0.41 : 2 (+ 2,= 0,- 0), 100.0 %
Dragon 2.5.1 : 8 (+ 0,= 7,- 1), 43.8 %
GreKo 2021.10 : 2 (+ 2,= 0,- 0), 100.0 %
CorChess 241021 : 2 (+ 0,= 1,- 1), 25.0 %
Black Marlin 1.0 : 2 (+ 2,= 0,- 0), 100.0 %
Blue Marlin 14.4 : 2 (+ 0,= 1,- 1), 25.0 %
Koivisto 7.0 : 2 (+ 0,= 2,- 0), 50.0 %
BrainLearn 14.1 : 2 (+ 0,= 1,- 1), 25.0 %
Swordfish 14.4 : 2 (+ 0,= 1,- 1), 25.0 %
ShashChess 19.2 : 2 (+ 0,= 1,- 1), 25.0 %
Stockfish 14.1 : 12 (+ 0,= 9,- 3), 37.5 %
KillFish CTR Hybrid v1.4 : 2 (+ 0,= 2,- 0), 50.0 %
Stockfish 13 : 4 (+ 0,= 3,- 1), 37.5 %
Eman 7.70 : 2 (+ 0,= 2,- 0), 50.0 %
Fisherov 0.98h : 4 (+ 0,= 2,- 2), 25.0 %
Arasan 23.1 : 2 (+ 2,= 0,- 0), 100.0 %
Raubfisch X47d2c : 2 (+ 0,= 2,- 0), 50.0 %
Koivisto 7.2 : 2 (+ 0,= 2,- 0), 50.0 %
Fat Fritz 2 210822 : 1 (+ 0,= 1,- 0), 50.0 %
Nemorino 6.00 : 4 (+ 2,= 2,- 0), 75.0 %
BrainLearn 15 : 2 (+ 0,= 2,- 0), 50.0 %
Wasp 5.00 : 2 (+ 1,= 1,- 0), 75.0 %
SugaR AI 2.50 : 10 (+ 0,= 8,- 2), 40.0 %
CorChess 131121 : 2 (+ 0,= 2,- 0), 50.0 %
Igel 3.0.10 : 8 (+ 2,= 6,- 0), 62.5 %
Koivisto 7.9 : 4 (+ 0,= 4,- 0), 50.0 %
Fisherov 0.98i : 5 (+ 0,= 3,- 2), 30.0 %
Raubfisch X47e1 : 2 (+ 0,= 2,- 0), 50.0 %
Berserk 8 : 2 (+ 0,= 2,- 0), 50.0 %
Stockfish 041221 : 2 (+ 0,= 2,- 0), 50.0 %
Seer 2.4.0 : 4 (+ 1,= 3,- 0), 62.5 %
Raubfisch X47e : 2 (+ 0,= 2,- 0), 50.0 %
Fisherov 0.98j : 14 (+ 0,= 10,- 4), 35.7 %
Kayra 1.1 : 2 (+ 0,= 1,- 1), 25.0 %
Lc0 0.28.2 : 2 (+ 0,= 1,- 1), 25.0 %
Minic 3.18 : 2 (+ 0,= 2,- 0), 50.0 %
Devel 4.0.2.3 : 2 (+ 2,= 0,- 0), 100.0 %
Combusken 2.0.0 : 2 (+ 2,= 0,- 0), 100.0 %
Stockfish 170122 : 2 (+ 0,= 1,- 1), 25.0 %
RubiChess 2021 : 2 (+ 1,= 1,- 0), 75.0 %
Drofa 3.3.0 : 2 (+ 1,= 1,- 0), 75.0 %
Little Goliath 3.15 : 2 (+ 2,= 0,- 0), 100.0 %
Velvet 3.1.3 : 2 (+ 1,= 1,- 0), 75.0 %
Clover 3.0 : 4 (+ 1,= 3,- 0), 62.5 %
Anka 0.6.3 : 2 (+ 2,= 0,- 0), 100.0 %
CorChess 250122 : 2 (+ 0,= 1,- 1), 25.0 %
Stockfish 250122 Ivec : 4 (+ 0,= 2,- 2), 25.0 %
Raubfisch X48c3 : 2 (+ 0,= 2,- 0), 50.0 %
Rebel 14.1 NNUE : 2 (+ 1,= 1,- 0), 75.0 %
Protej 0.6.2 : 2 (+ 2,= 0,- 0), 100.0 %
Eman 7.80 : 1 (+ 0,= 0,- 1), 0.0 %
CorChess 070222 : 2 (+ 0,= 2,- 0), 50.0 %
Dragon 2.6.1 : 6 (+ 0,= 4,- 2), 33.3 %
Stockfish 130222 : 2 (+ 0,= 2,- 0), 50.0 %
Berserk 9-dev NN : 2 (+ 1,= 1,- 0), 75.0 %
Koivisto 7.13 : 2 (+ 0,= 2,- 0), 50.0 %
SlowChess 2.83 : 2 (+ 1,= 1,- 0), 75.0 %
Mayhem 6.7 : 4 (+ 2,= 2,- 0), 75.0 %
Stockfish 170222 : 6 (+ 0,= 2,- 4), 16.7 %
Keele 1.0 : 6 (+ 6,= 0,- 0), 100.0 %
Fire 8.2 : 6 (+ 2,= 4,- 0), 66.7 %
Leorik 1.0 : 4 (+ 3,= 0,- 1), 75.0 %
Raubfisch X48d2 : 2 (+ 0,= 2,- 0), 50.0 %
Crystal 251221 : 1 (+ 0,= 1,- 0), 50.0 %
Raubfisch X48e : 3 (+ 0,= 3,- 0), 50.0 %
Caissa 0.5 : 1 (+ 0,= 1,- 0), 50.0 %
Stockfish 250322 : 2 (+ 0,= 2,- 0), 50.0 %
Kayra 1.3 : 1 (+ 0,= 1,- 0), 50.0 %
Koivisto 8.6 : 12 (+ 0,= 11,- 1), 45.8 %
ProteusSF 005 : 2 (+ 0,= 2,- 0), 50.0 %
Lc0 0.29.0-rc0 : 2 (+ 0,= 2,- 0), 50.0 %
Stockfish 15 : 2 (+ 0,= 2,- 0), 50.0 %
Mayhem 7.0 : 2 (+ 2,= 0,- 0), 100.0 %
Clover 3.1 : 2 (+ 2,= 0,- 0), 100.0 %
Berserk 9-dev e68765ea32a3 : 2 (+ 0,= 2,- 0), 50.0 %
Slowchess 2.83 : 2 (+ 0,= 2,- 0), 50.0 %
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