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an [[UCI]] compliant chess engine by [[Norman Schmidt]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=50463&start=5 Re: Fire 3.0 released] by [[Norman Schmidt]], [[CCC]], December 13, 2013</ref>, 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 <ref>[http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:chess_engine_list Chess Engine List] from [[Ron Murawski|Ron Murawski's]] [http://computer-chess.org/doku.php?id=home Computer-Chess Wiki]</ref>, it was released as open source, Fire licensed under the [[Free Software Foundation#GPL|GNU GPL]]. The sources were later closed with [[Windows]] executables available for download for recent [[Intel]] processors <ref>[http://www.talkchess.com/forum/viewtopic.php?t=50463 Fire 3.0 released] by Stefan Pohl, [[CCC]], December 13, 2013</ref>. Fire features [[Magic Bitboards|magic bitboards]], it can be configured with more than 70 UCI options, and applies a [[Parallel Search|SMP parallel search]]. Since April 2021 with Fire '''8.1''', the program is [[:Category:Open Source|open source]] again <ref>[https://github.com/FireFather/fire GitHub - FireFather/fire: a very strong, state-of-the-art, highly optimized, open-source freeware UCI chess engine...]</ref>.

Fire '''4''', released in December 2014, was a compete re-write and does not use any source code from or related to [[Ippolit]]. It supports [[Syzygy Bases]], and includes a revamped memory management which uses [https://en.wikipedia.org/wiki/OpenMP OpenMP] [https://en.wikipedia.org/wiki/C_preprocessor#Compiler-specific_preprocessor_features #pragmas] to utilize [https://en.wikipedia.org/wiki/Thread-local_storage thread local storage] <ref>[https://software.intel.com/en-us/articles/use-thread-local-storage-to-reduce-synchronization Use Thread-local Storage to Reduce Synchronization | Intel® Developer Zone], November 2, 2011</ref> and minimize the amount of 'shared' resources among [[Thread|threads]] for its [[Parallel Search|SMP implementation]]. [[Engine Testing|Testing]] was done via massive parallel, automated 24/7 ultra-fast chess engine matches using [[Cutechess-cli]] and [[LittleBlitzer]]. Code changes were tested to a very high level of confidence using [[Match Statistics#Likelihood of superiority|LOS]] and [[Match Statistics#SPRT|SPRT]] (min. 40,000 games) against a pool of top engines. Development and testing included approx. 200,000 - 240,000 ultra-fast games per day <ref>Information provided by [[Norman Schmidt]], July 2015</ref>. According to a [[CCC]] posting by anonymous poster cucumber in September 2020, but in contradiction to Norman Schmidt's later statement <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=10&t=76719&start=3 Re: Fire 8 GPLv3 Source Request] by [[Norman Schmidt]], [[CCC]], February 26, 2021 (Engine Origins)</ref>, Fire 4 was later released as open source engine [[Gull#SeaGull|Seagull]] based on [[Gull]], hiding its Fire 4 origin <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75150&start=170 Re: Fire 7.1 GPLv3 Source Request] by cucumber, [[CCC]], September 23, 2020</ref>.

* [httphttps://chesslogik.wixwixsite.com/fire Fire Chess Engine]* [https://chesslogik.wixsite.com/fire/about ABOUT | fire]* [https://github.com/FireFather/fire GitHub - FireFather/fire: a very strong, state-of-the-art, highly optimized, open-source freeware UCI chess engine...]

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