Fritz

a series of chess programs published by ChessBase, until Fritz **13** the engine developed by primary author Frans Morsch and Mathias Feist, Deep Fritz **14** released in November 2013 by Gyula Horváth, and Fritz **15** in November 2015 by Vasik Rajlich. Fritz 1-13 were based on Frans Morsch's program Quest, and was first marketed by ChessBase in 1991 as MS-DOS program with its own Graphical User Interface. Since version 4, released in 1996, Fritz ran on Windows, and is until today one the world’s most popular and successful chess programs. At the WCCC 1995, Fritz became World Computer Chess Champion, winning a notable game versus Deep Blue [|prototype] and the playoff against Star Socrates. || toc =Etymology= The given name Fritz originated as a German nickname for [|Friedrich], or [|Frederick] (der "Alte Fritz" was a nickname for [|King Frederick II of Prussia], and of [|Frederick III, German Emperor] ), as well as for similar names including Fridolin. Fritz was also a name given to German troops by the British and others in the [|first] and [|second world wars], equivalent to [|Tommy], as the British troops were called by German and other troops. Creative ChessBase partner Olaf Oldigs had suggested the name Fritz for the chess program.
 * Home * Engines * Fritz**
 * [[image:UnserFritz20160916.JPG link="https://commons.wikimedia.org/wiki/File:Herne_-_Kulturpark_Unser_Fritz_-_2-3_03_ies.jpg"]] ||~ || **Fritz** (early versions called **Knightstalker** in the USA),
 * Unser Fritz 2/3, protego sundial and machine hall ||~ ||^ ||

=Selected Games= WCCC 1995, round 5, Deep Blue Prototype - Fritz code [Event "WCCC 1995"] [Site "Chinese University HKG"] [Date "1995.05.29"] [Round "5"] [White "Deep Blue Prototype"] [Black "Fritz"] [Result "0-1"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Bxf6 gxf6 10.Nd5 f5 11.Bd3 Be6 12.Qh5 f4 13.O-O Rg8 14.Kh1 Rg6 15.Qd1 Rc8 16.c4 Qh4 17.g3 Qh3 18.Qd2 f3 19.Rg1 Rh6 20.Qxh6 Qxh6 21.cxb5 Bxd5 22.exd5 Nb4 23.Bf5 Rc5 24.bxa6 Nxa6 25.Nc2 Qd2 26.Ne1 Rxd5 27.Nxf3 Qxf2 28.Be4 Ra5 29.Rg2 Qe3 30.Re1 Qh6 31.Bc6+ Kd8 32.a3 f5 33.Rc2 Rc5 34.Rxc5 Nxc5 35.Rf1 Be7 36.a4 f4 37.gxf4 Qxf4 38.Rg1 Nxa4 39.b4 Qxb4 0-1 code

=Null Move= Frans Morsch, as well as other Dutch computer chess programmers like Bart Weststrate and Dap Hartmann, did early experiments with recursive null move pruning in the late 80s, likely after it was discussed at the panel workshop during the WCCC 1986 after Don Beal's talk covering null move. Frans Morsch told Chrilly Donninger about recursive null move, who popularized it by his //Null Move and Deep Search// paper in the ICCA Journal 1993.

=Descriptions= from the ICGA tournament page :

1999
 =Deep Fritz= Deep Fritz is the engine designed for [|multiprocessing] and parallel search, it first appeared as Deep Fritz 6 in 2000. Since version 14 by Gyula Horváth, Deep is obligatory.  =Fritz SSS= A Fritz version called SSS or even SSS* that played the [|Dutch Chess Championship] 2000 in [|Rotterdam], becoming third with 7/11 behind [|Loek van Wely], and [|Jeroen Piket], shared with [|Sergei Tiviakov] and [|Paul van der Sterren], was not related to the SSS* search algorithm, but to the three primary sponsors of the event.  =Pocket Fritz= Pocket Fritz is a chess program for [|PocketPC] [|Personal digital assistants] (PDAs). Pocket Fritz 4 is based on Hiarcs by Mark Uniacke, Pocket Fritz 2 used a port of Shredder by Stefan Meyer-Kahlen.  =Fritz User Interface=

Fritz 1

 * [[image:fritz1.JPG link="http://www.septober.de/chess/pics/9104.gif"]] ||
 * The original Fritz MS-DOS Graphical User Interface from 1991 ||

Fritz 5

 * [[image:fritz5.JPG link="http://www.septober.de/chess/pics/fritz5.GIF"]] ||
 * Fritz 5 Windows Graphical User Interface ||

Deep Fritz 14
Recent Deep Fritz GUI is suited to run other ChessBase or UCI engines with either using its own proprietary protocol, as well as the UCI protocol.


 * [[image:DeepFritz14d_1.jpg width="640" link="http://shop.chessbase.com/en/products/deep_fritz_14_english"]] ||
 * Deep Fritz 14 GUI ||

=Authors=
 * Mathias Feist
 * Gyula Horváth
 * Frans Morsch
 * Vasik Rajlich

=Book Authors=
 * Cock de Gorter
 * Alex Kure

=See also=
 * ChessBase
 * ChessBase (Database)
 * Chessica
 * CTG - ChessBase opening book format
 * Fridolin
 * Given Name
 * Knowledge | Search versus Evaluation
 * Null Move Pruning
 * Pandix
 * Quest
 * Rybka

=Release Dates=

Frans Morsch

 * Fritz 1.0 : 1991
 * Fritz Deluxe : 1992
 * Fritz 2.0 : 1992 or 1993
 * Fritz 2.51 : 1994
 * Fritz 3.0 : 1994 or 1995
 * Fritz 4.0 : 1995 or 1996
 * Fritz 5.0 : 1997 or 1998
 * Fritz 5.32 : 1998 or 1999
 * Fritz 6 : 2000
 * Deep Fritz : 2000
 * Fritz 7 : July 2001
 * Fritz Bahrain : November 2002
 * Deep Fritz 7.0 : 2003
 * Fritz 8 : September 2003
 * X3D Fritz : November 2003
 * Fritz 8 Bilbao : December 2004
 * Deep Fritz 8.0 : 2005
 * Fritz 9 : December 2005
 * Fritz 10 : October 2006
 * Deep Fritz 10 : December 2006
 * Fritz 11 : November 2007
 * Deep Fritz 11 : November 2008
 * Fritz 12 : October 2009
 * Deep Fritz 12 : July 2010
 * Fritz 13 : October 2011
 * Deep Fritz 13 : June 2012

Gyula Horváth

 * Deep Fritz 14 : November 2013

Vasik Rajlich

 * Fritz 15 : November 2015
 * Fritz 16 : November 2017

=Matches=
 * Kramnik versus Deep Fritz 2002
 * Kasparov versus X3D Fritz 2003
 * Kramnik versus Deep Fritz 2006
 * Deep Fritz versus Deep Junior 2007

=Publications=
 * Fabian Mäser (**1995**). //Fritz vs.Deep Blue: Opening Book vs, Opening Book//. Computer Chess Reports, Vol. 5, No. 2, pp. 22 » WCCC 1995
 * Robert Hyatt (**1995**). //Still more Fritz vs. Deep Blue: Opening Book vs, Opening Book//. Computer Chess Reports, Vol. 5, No. 2, pp. 22
 * Larry Kaufman (**1995**). //Does Fritz deserve to be World Champion?// Selective Search 60, pp 3, [|pdf] hosted by Mike Watters
 * Karsten Müller (**2002**). //The Clash of the Titans: Kramnik – Fritz Bahrain//. ICGA Journal, Vol. 25, No. 4 » Kramnik versus Deep Fritz 2002
 * Matthias Wüllenweber (**2002**). //The Match from Fritz' View Point//. ICGA Journal, Vol. 25, No. 4
 * David Levy (**2003**). //Kasparov vs X3D Fritz//. ICGA Journal, Vol. 26, No. 4 » Kasparov versus X3D Fritz 2003
 * Christian Liebert (**2005**). //Fritz 9: Der König ist zurück//. Computerschach und Spiele Online, [|pdf] (German)
 * Christian Liebert (**2006**). //Fritz die Zehnte//. Computerschach und Spiele Online, [|pdf] (German)
 * Matthias Wüllenweber, Frederic Friedel, Mathias Feist (**2006**). //Kramnik vs. Deep Fritz 10: Computer wins match by 4-2//. ICGA Journal, Vol. 29, No. 4 » Kramnik versus Deep Fritz 2006
 * Eric Hallsworth (**2007**). //Vladimir Kramnik (World Champion) v Deep Fritz 10//. Selective Search 128, pp. 14-24, [|pdf] hosted by Mike Watters

=Forum Posts=

1991 ...

 * [|Commercial Chess Programs] by Mike Valvo, rgc, July 19, 1991 » ChessMachine, MChess, Zarkov
 * [|KnightStalker Demo] by Benjamin Lin, rgc, December 29, 1992
 * [|ChessBase for Windows and/or Fritz 3 Review] by Johannes Fürnkranz, rgc, September 06, 1994 » ChessBase (Database)
 * [|Fritz 3 ELO on different computers] by Moritz Berger, rgc, September 19, 1994

1995 ...

 * [|Fritz 3 Makes IM Norm] by Michel Behna, rgc, January 31, 1995
 * [|Deep Thought /WCCC Round 5 vs Fritz] by Robert Hyatt, rec.games.chess, May 31, 1995 » WCCC 1995
 * [|Fritz 4 and the SSDF] by Moritz Berger, rgcc, June 27, 1996 » SSDF
 * [|LCT II results of Reb9, F5, and H6 on K6/233] by Albert Silver, CCC, January 03, 1998 » LCT II, Rebel, Hiarcs
 * [|Fritz 5] by Didzis Cirulis, CCC, February 06, 1998
 * [|Multi-Fritz with Boss versus IM R. Vasquez] by Ingo Althöfer, CCC, March 09, 1999
 * [|Tactical monsters: Fritz5.32 and Goliath 2.05] by Jouni Uski, CCC, August 03, 1999

2000 ...

 * [|How make Fritz execute brute force search?] by Leonid, CCC, July 26, 2000
 * [|Junior chess program. Just version of Fritz 5?] by Leonid, CCC, July 29, 2000 » Junior
 * [|Re: Fritz protocol] by Odd Gunnar Malin, Winboard Forum, April 14, 2002 » Wb2UCI
 * [|Re: Something new about Fritz? English] by Sven Reichard, CCC, June 23, 2002
 * [|Re: Something new about Fritz? English, part 2] by Sven Reichard, CCC, June 24, 2002 » Eduard Nemeth
 * [|Request for link to Eduard Nemeth messages about Fritz 8.0.0.23] by Javier Ros Padilla, CCC, March 17, 2003 » Eduard Nemeth
 * [|Re: Shredder 8 secret: search depth?] by Vasik Rajlich, CCC, March 23, 2004 » Depth, Shredder, Junior

2010 ...
> [|Re: New Fritz author?] by Albert Silver, CCC, November 20, 2013
 * [|Fritz 12] by Alexander Schmidt, CCC, May 31, 2011
 * [|Fritz and Naum shown as Rybka/Strelka clones] by Kai Laskos, CCC, October 17, 2011
 * [|Deep Fritz 11 eval] by BB+, OpenChess Forum, October 23, 2011
 * [|Are Fritz and Naum Rybka/Strelka clones?] by SR, Rybka Forum, November 09, 2011
 * [|New Fritz author?] by John Hartmann, CCC, November 19, 2013
 * [|Re: First Impressions (Deep Fritz 14)?] by Albert Silver, CCC, November 22, 2013
 * [|Allegations that Deep Fritz 14....] by Dr.Wael Deeb, CCC, Engine Origins, December 03, 2013
 * [|Fritz 11] by Rebel, OpenChess Forum, December 10, 2013
 * [|ChessBase / Fritz interface running on Ubuntu?] by Norbert Raimund Leisner, CCC, December 17, 2013 » Linux

2015 ...

 * [|Fritz 15 (Vas Rajlich?)] by Graham Banks, CCC, July 24, 2015 » Vasik Rajlich
 * [|Fritz 15.0] by Tim Shackel, CCC, November 20, 2015
 * [|"Sampled search" ?] by albitex, Rybka Forum, February 23, 2016
 * [|Fritz 16] by David Shanholtzer, CCC, November 12, 2017

=External Links=

Chess Engine

 * [|Fritz' ICGA Tournaments]
 * [|Fritz (chess) from Wikipedia]
 * [|Pocket Fritz from Wikipedia]
 * [|The chess games of Fritz] from [|chessgames.com]
 * [|Download Chess Programs] hosted by Ed Schröder (Fritz 5.32)
 * [|The Campbell Report - Computer CC Challenge Match]
 * [|Measuring similarity native ChessBase engines] by Ed Schröder

Purchase

 * [|Fritz 16 - English Version] - ChessBase Shop
 * [|Fritz 15 - English Version], ChessBase Shop
 * [|Deep Fritz 14] - ChessBase Shop

ChessBase News

 * [|Fritz Defends to Draw Game 8 and the Match! Final Score: 4-4] The Brains in Bahrain Man-Machine match is over, from ChessBase News, October 19, 2002
 * [|Kasparov vs X3D Fritz match finishes 2-2 after game four draw] from ChessBase News, November 19, 2003
 * [|Deep Fritz 8 review] by Steve Lopez, ChessBase News, December 27, 2003
 * [|Mate search in Fritz] by Steve Lopez, ChessBase News, August 07, 2004
 * [|Fritz 9 3D boards – part 1] by Steve Lopez, ChessBase News, January 10, 2006
 * [|Fritz 9 3D boards – part 2] by Steve Lopez, ChessBase News, January 17, 2006
 * [|Fritz 9 3D boards – part 3] by Steve Lopez, ChessBase News, January 25, 2006
 * [|Man vs machine shocker: Kramnik allows mate in one], [|Bonn], November 27, 2006
 * [|Kramnik vs Deep Fritz: Computer wins match by 4:2], ChessBase News, December 05, 2006
 * [|Deep Fritz 12 – an interview with the author], ChessBase News, February 17, 2010
 * [|Fritz 13 is now available – let's check who needs it!], ChessBase News, October 13, 2011
 * [|Deep Fritz 13 with blow-your-mind functions], ChessBase News, June 08, 2012
 * [|Deep Fritz 14: Faster, better, cheaper], ChessBase News, November 20, 2013
 * [|Deep Fritz 14 – Elo 3150 on your computer] by [|Sean Marsh], ChessBase News, January 28, 2014
 * [|From Chess Challenger to Deep Fritz 14] by Ken Blake, ChessBase News, February 27, 2014 » Chess Challenger
 * [|Analyzing your games with Fritz (Part one)] by Albert Silver, ChessBase News, June 02, 2014
 * [|Analyzing your games with Fritz (Part two)] by Albert Silver, ChessBase News, June 04, 2014
 * [|Analyzing your games with Fritz (Part three)] by Albert Silver, ChessBase News, June 07, 2014
 * [|Deep Fritz 14 now with ChessBase for Android] by Albert Silver, ChessBase News, February 23, 2015 » Android
 * [|Using Deep Fritz 14 on a smartphone] by [|A. Ganesan], ChessBase News, April 13, 2015 » Android
 * [|Come and get it – Fritz 15 released!], ChessBase News, November 25, 2015
 * [|Fritz 15 engine - questions and answers] by Albert Silver, ChessBase News, January 04, 2016
 * [|Using your home chess engine anytime, anywhere] by Albert Silver, ChessBase News, May 09, 2017
 * [|Fritz 16 – your companion and trainer], ChessBase News, November 12, 2017
 * [|Fritz 16 — a fun and instructive opponent] by Albert Silver, ChessBase News, December 11, 2017

Rating Lists

 * [|Fritz 15 64-bit 4CPU] in CCRL 40/40
 * [|Fritz family] in CCRL 40/40

Misc

 * [|Fritz from Wikipedia]
 * [|Fritz the Cat from Wikipedia]

=References= =What links here?= include page="Fritz" component="backlinks" limit="200"
 * Up one Level**