Fire 7.1
\n\n05/27/2018
\n\nsignificant maintenance release which addresses multiple critical issues:
\n\n- losses on time in Arena GUI
\n- loss of communication to GUI while pondering
\n- multi-threading crashes with 'unknown exception' error
\n- freezing/unpredictable behavior due to buffer under/over runs
It is highly recommended to upgrade any previous Fire 7 binaries to this release
\n
Fire 7
\n\n05/21/2018
\n\nSMP reworked
\nevaluation impovements
\nsearch impovements
\nchange in the way nodes are counted
\n30-40 Elo increase in playing strength
\n\nFire 6.1
\n\n09/23/2017
\n\nmaintenance release which fixes a bug concerning the display of PVs
\n\nno other changes, and no increase in playing strength
\n\n\n\n
Fire 6
\n\n09/22/2017
\n\nsignificant parameter tuning
\n\npawn play improvements
\n\npositional evaluation improvements
\n\nsmall improvement in search
\n\nmodest increase in playing strength
\n\n
\n\nFire 5
\n\n11/14/2016
\n\nimproved search
\n\nseveral new eval clauses
\n\npst, eval, and search parameters fine tuned via SPSA
\n\nimproved endgame play
\n\nUCI contempt parameter added
\n\nSyszygy 50-move rule UCI parameter added
\n\nchess960 support added
\n\nlarge increase in playing strength
\n\n
\n\nFire 4
\n\n12/6/2014
\n\nnew search
\n\nnew and improved eval
\n\nhumanistic analysis
\n\nextensive search, pst, and eval parameter tuning
\n\nimproved material table initialization and phase calculation
\n\ncommon endgame eval routines
\n\nthread local storage SMP up to 64 threads
\n\nsupport for Syzygy endgame tablebases
\n\nsignificant increase in playing strength
\n\n\n\n
Fire 3.0
\n\n12/13/2013
\n\nsignificant strength increase
\n\noptions removed
\n\ncode optimizations
\n\nspeed increase
\n\neval terms added
\n\nsearch improved (reductions and extensions)
\n\n'bench' utility improved
\n\n\n\n
Fire 2.2 xTreme
\n\n7/06/2011
\n\nopen-source
\n\nmagic bitboards
\n\ntrue SMP parallel search
\nconfigurable pawn hash
\nponder
\nsearchmoves
\nmultiPV
\nbenchmark utilities
\nmulti positional gain (for each CPU/core/thread)
\nmulti history (for each CPU/core/thread)
\nrobbobase support (up to 6 piece endings)
\n70+ UCI/fire.cfg options
\nrandom configuration generation
\noptional timestamped I/O log file
\n
\nFire 2.1 xTreme
6/27/2011
\n\nopen-source
\n\nmaintenance release
\nMultiPV fixed...
\n
\nFire 2.0 xTreme
6/26/2011
\n\nopen-source
\n\nsupports up to 64 cores/threads
\noccasional crash fixed
\ncode improvements, bitwise optimizations
\nSEE piece/capture values are no longer constant entities
\nfire.cfg incorrect default value for Prune_Pawn fixed: Prune_pawn = 160
\nFire now recognizes whether or not the system supports hardware popcount and/or large pages, and self-configures itself accordingly
\nsome code cleanup, formatting, and re-organization
\nmore complete Log implementation
\nUCI clear hash button added
\n\n
Fire 2.0 xTreme beta
\n\n6/24/2011
\n\nopen-source
\n\nOptional configuration file creation options:
\n\nSimply type:
\n\n'default' (generates a fire.cfg w/ default parameters)
\n\nor:
\n\n'random' (generates a fire.cfg w/ random parameters)
\n\n'rand_eval' (generates a fire.cfg w/ random evaluation parameters)
\n\n'rand_material' (generates a fire.cfg w/ random material value parameters)
\n\n'rand_prune' (generates a fire.cfg w/ random search prune parameters)
\n\n'rand_search' (generates a fire.cfg w/ random search parameters)
\n\n'rand_time' (generates a fire.cfg w/ random time management parameters)
\n\nat the console prompt to generate a unique fire.cfg file.
\n\n\n\n
Fire 1.5 xTreme
\n\n5/31/2011
\n\nopen-source
\n\nTriplebases (TBHit) fixed
\nHistoric Piece Values can now be changed 'on-the-fly
\nAhmed default piece values implemented:
\n100, 320, 335, 515, 1000
\nTop Min Depth min/max values inversion
\noption Draw Weight added
\n5 TM options added:
\nAbsoluteFactor
\nBattleFactor
\nEasyFactor
\nEasyFactorPonder
\nNormalFactor
\nTM algorithms from 1.4 beta
\nSMP up to 16 cores
\n
\nFire 1.4 xTreme beta 2
5/29/2011
\n\nopen-source
\n\nHistoric Piece Value bug fixed
\nAspiration Window option added
\nMin Trans Move Depth option added
\nPositional Weight added
\nStatic Weight->PST Weight
\nTime Management from Fire 1.32
\nsome code cleanup
\n
\nFire 1.4 xTreme beta
5/28/2011
\n\nopen-source
\n\nextreme user configurability:
\nall system, search, eval, and material parameters available via an external config file or GUI UCI option dialog box
\nsupport for 6-piece Robbobases
\nELO increase
\nrandom fire.cfg generation
\n21 historic piece value sets
\n
\nFire 1.32
5/26/2011
\n\nopen-source
\n\nmaintenance release one year after original release
\nfixes UCI and fire.cfg piece value change issue
\n(thx to Matt Weaver for identifying this)
\nknight = 320
\nbishop = 330
\nqueen = 980
\ntr and col changed to rank and file for improved source code readability/consistency
\nthe above changes are mainly functional and likely do not affect overall strength (ELO)
\n
\nFire 1.31
5/30/2010
\n\nopen-source
\n\nmaintenance release
\nwith Fire 1.2 and 1.3, Totalbases and Triplebases can be configured to autoload on engine startup only via the fire.cfg file, so i've added 2 new UCI options, and associated code, which enables configuration of 'autoloading of Robbobases' via UCI GUIs:
\nAutoload Totalbases
\nAutoload Triplebases
\nid name and id author are now placed outside of 'if
\n(CfgFound)' statement in static void uci()
\nthis was causing Fire 1.3 to not load in Fritz and CB
\nHash size wasn't being read properly if using fire.cfg
\nthis has now been fixed
\n
\nFire 1.3
5/28/2010
\n\nopen-source
\n\nnew/faster bitboard LSB/MSB routines
\nmutually exclusive fire.cfg/UCI GUI options
\nphase-scaled piece values improved
\nQSearch fix/improvement
\nMaxThreads = 256
\nseveral new/improved eval routines
\nphase multiplier fix
\ncode cleanup
\nspeed improvement
\nMultiPV now automatically disabled in 'game' mode
\nseveral small bugfixes
\n
\nUCI options added:
\nLazy Eval 1
\nLazy Eval 2
\nUCI_EngineAbout
\nAspirationWindow
\nSplit At CN
\nSplit At EN
\nANSplitDepth
\nENSplitDepth
\nPVSplitDepth
\nContempt
\nMaterial Weight
\nPositional Weight
\nUseRobboBases
\nLow Depth PVs
\nTime Info
\nVerbose UCI
\nUCI_EngineAbout
\n
\nUCI options removed:
\nNMR Smooth Scaling
\nExtra Info
\nFire 1.3 Thuringen
not publicly released
\n\nparticipated in 2010 Thuringen (Germany) tournament
\n\n
\nFire 1.2
3/5/2010
\n\nSMP improvements/changes
\nmajor RobboTripleBase bug fix
\nsupport for new RobboTriple/Total Blocked (Z) bases added
\nimproved hash functions
\nUCI options added: UCI_AnalyseMode, CPU Load Info, Current Move, Depth Info, Hash Full Info, TB Hits Info, Time Info
\nUCI options removed: Analysis Mode, Extra Info, Multi History, Multi Positional Gain
\nNMR Smooth Scaling renamed NMR Scaling
\n(Null Move Reduction Scaling)
\n
\nFirebird 1.1
2/15/2010
\n\nsupport for RobboTripleBases and RobboTotalBases added
\nreads Fire.cfg parameters file on startup
\nwrites (optional) time-stamped I/O log file
\nNMR Smooth Scaling now 'off' by default
\n
\nFirebird 1.01 (maintenance release)
2/3/2010
\n\nbug fix:
\nmajor changes to SMP (to prevent occasional exception error/timeout)
\nchanges to NMR Smooth Scaling
\nNull Move verification default = true
\nverification reduction default = 7
\nGetNumberOfConsoleInputEvents ->_kbhit
\n
\nFirebird 1.0
2/3/2010
\n\nseveral minor bugs fixed:
\nno longer occasionally displays score of 0.01
\nno longer drops a thread after ~16 hours in analysis mode
\nengine now initializes at 128 Mb hash
\nmovelists enlarged to accommodate really long games
\npawn hash set to 32 Mb by default
\nimproved time management
\n
\nnew UCI options:
\nGet FEN
\nAnalysis (Fritz) Mode
\nMove on Ponderhit (Never, Sometimes, Always)
\nNMR Smooth Scaling (Null Move Reduction Smooth Scaling)
\nPawn Value
\nKnight Value
\nBishop Value
\nRook Value
\nQueen Value
\nBishop Pair Value
\nNull Move Verification
\nVerification Reduction
\nMove on Ponderhit
\nExtra Info
\n
\nUCI options removed:
\nMultiCentiPawnPV
\nRandomCount
\nRandomBits
\nEnhanced Time Management
\n
\nCPU Load implemented
\nETM has been improved and is now used by default
\nnew and improved SMP routines
\nMultiPV now works in 'game' mode as well as 'Analysis' mode
\n\n
Firebird 1.0 beta
\n\n1/5/2010
\n\nbitboards
\n\ntrue SMP parallel search
\n\nconfigurable pawn hash
\n\nanalysis mode
\n\nponder
\n\nsearchmoves
\n\nmultiPV (in beta)
\n\nmultiCentiPawnPV
\n\nHyatt Hash
\n\nperft, benchmark, and drawboard utilites
\n\n(ex: type 'perft 6' or 'benchmark' at the console prompt)
\n\nvalidate functions (debug)
\n\nmulti pos gain (for each CPU/core/thread)
\n\nmulti history (for each CPU/core/thread)
\n\n\n\n
most recent improvements:
\n\nnative Windows SMP threads/multiprocessing
\n\ncode cleanup and formatting
\n\nMax Threads UCI option
\n\nget_sys_info function:
\n\nqueries Windows for # CPUs,
\n\nsets appropriate # threads
\n\nsearchmoves
\n\npondering improved
\n\nseveral bugfixes
\n\nSMP code vastly improved
\n\nauto CPU (Max Thread) detect/config
\n\nUCI Max Thread configuration option
\n\nimproved prefetch routine
\n\nimproved bitscan routines
\n\nmersenne twist random number generator
\n\nsparse one POPCNT
","stylesMapId":"CK_EDITOR_PARAGRAPH_STYLES","linkList":[]},"customBgImgmrq":{"type":"BackgroundMedia","id":"customBgImgmrq","metaData":{"isPreset":false,"schemaVersion":"2.0","isHidden":false},"mediaRef":"#c1e84_mobile_mediaRef","color":"#FFFFFF","alignType":"top","fittingType":"legacy_tile","scrollType":"fixed"},"customBgImgqfw":{"type":"BackgroundMedia","id":"customBgImgqfw","metaData":{"isPreset":false,"schemaVersion":"2.0","isHidden":false},"mediaRef":"#c1e84_desktop_mediaRef","color":"#FFFFFF","alignType":"top","fittingType":"legacy_tile","scrollType":"fixed"}},"design_data":{},"behaviors_data":{},"connections_data":{},"theme_data":{},"component_properties":{"hyp1pdq1":{"type":"WRichTextProperties","metaData":{"schemaVersion":"1.0"},"brightness":1.0,"packed":true},"mobile_hyp1pdq1":{"type":"WRichTextProperties","metaData":{"schemaVersion":"1.0","autoGenerated":true},"brightness":1.0,"packed":false}},"mobile_hints":{"mobileHints-j7w8y6pe":{"type":"MobileHints","id":"mobileHints-j7w8y6pe","hidden":false}}},"title":"HISTORY","pageUriSEO":"history"}