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Created page with "'''Home * Engines * Fritz''' FILE:UnserFritz20160916.JPG|border|right|thumb|link=https://commons.wikimedia.org/wiki/File:Herne_-_Kulturpark_Unser_Fritz_-_..."
'''[[Main Page|Home]] * [[Engines]] * Fritz'''
[[FILE:UnserFritz20160916.JPG|border|right|thumb|link=https://commons.wikimedia.org/wiki/File:Herne_-_Kulturpark_Unser_Fritz_-_2-3_03_ies.jpg|Unser Fritz 2/3, protego sundial and machine hall <ref>Former [https://en.wikipedia.org/wiki/Coal_mining coal mine] [https://de.wikipedia.org/wiki/Zeche_Unser_Fritz Unser Fritz 2/3] in [https://en.wikipedia.org/wiki/Herne,_North_Rhine-Westphalia Herne, North Rhine-Westphalia], Germany, now artist-studio, exhibition and event space, and part of [[Arts#IndustrialHeritageTrail|The Industrial Heritage Trail]] of the [https://en.wikipedia.org/wiki/Ruhr Ruhr area] - Image of [https://de.wikipedia.org/wiki/Protegohaube protegohaube] ([https://en.wikipedia.org/wiki/Flame_arrester flame arrester]) as [https://en.wikipedia.org/wiki/Gnomon gnomon] of a [https://en.wikipedia.org/wiki/Sundial sundial] and machine halls behind by [[Gerd Isenberg]], [https://en.wikipedia.org/wiki/Pedelec bike] tour, September 16, 2016. [https://de.wikipedia.org/wiki/Unser_Fritz/Crange Unser Fritz/Crange] is further district of Herne (Wanne), famous for its funfair [https://en.wikipedia.org/wiki/Cranger_Kirmes Cranger Kirmes], and [http://www.sv-unser-fritz.de/ SV Unser Fritz] the local chess club - eponym of the coal mine was [https://en.wikipedia.org/wiki/Frederick_III,_German_Emperor Frederick III, German Emperor], see also [http://www.kuenstlerzeche.de/zeche/zeche_chronik_fs.html Künstlerzeche Unser Fritz 2/3 - Chronik] (German) and [https://commons.wikimedia.org/wiki/File:Herne_-_Kulturpark_Unser_Fritz_-_2-3_03_ies.jpg 2011 Image] by [https://commons.wikimedia.org/wiki/User:Ies/L_Herne Frank Vincentz]</ref> ]]
'''Fritz''' (early versions called '''Knightstalker''' in the USA),<br/>
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]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=50149 New Fritz author?] by John Hartmann, [[CCC]], November 19, 2013</ref>, and Fritz '''15''' in November 2015 by [[Vasik Rajlich]] <ref>[https://shop.chessbase.com/en/products/fritz_15_english Fritz 15 - English Version], [[ChessBase|ChessBase Shop]]</ref> <ref>[http://en.chessbase.com/post/fritz-15-engine-questions-and-answers Fritz 15 engine - questions and answers] by [[Albert Silver]], [[ChessBase|ChessBase News]], January 04, 2016</ref>. 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 [[GUI|Graphical User Interface]] <ref>[https://en.chessbase.com/post/christmas-dinner-on-a-train-meet-the-chebase-team Christmas dinner on a train – meet the ChessBase team] from [[ChessBase|ChessBase News]], December 23, 2003</ref> . 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 [[WCCC 1995#DBlueFritz|notable game]] versus [[Deep Blue]] [https://www.game-ai-forum.org/icga-tournaments/program.php?id=349 prototype] <ref>[[Fabian Mäser]] ('''1995'''). ''Fritz vs. [[Deep Blue]]: Opening Book vs, Opening Book''. [[Computer Chess Reports|Computer Chess Reports Vol. 5 No. 2]] pp. 22, [[WCCC 1995]]</ref> and the [[WCCC 1995#Playoff|playoff]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=29&round=6&id=1 Shatin 1995, Chess, Round 6, Game 1]</ref> against [[Star Socrates]].
=Etymology=
The given name Fritz originated as a German nickname for [https://en.wikipedia.org/wiki/Friedrich_%28given_name%29 Friedrich], or [https://en.wikipedia.org/wiki/Frederick_%28given_name%29 Frederick] (der "Alte Fritz" was a nickname for [https://en.wikipedia.org/wiki/Frederick_II_of_Prussia King Frederick II of Prussia], and of [https://en.wikipedia.org/wiki/Frederick_III,_German_Emperor Frederick III, German Emperor] <ref>[https://de.wikipedia.org/wiki/Der_alte_Fritz_(1928) Der alte Fritz (1928) Wikipedia.de] (German)</ref>), as well as for similar names including [[Fridolin]]. Fritz was also a name given to German troops by the British and others in the [https://en.wikipedia.org/wiki/World_War_I first] and [https://en.wikipedia.org/wiki/World_War_II second world wars], equivalent to [https://en.wikipedia.org/wiki/Tommy_Atkins Tommy], as the British troops were called by German and other troops <ref>[https://en.wikipedia.org/wiki/Fritz Fritz from Wikipedia]</ref> . Creative ChessBase partner Olaf Oldigs <ref>[https://plus.google.com/112441411820050102952/about Olaf Oldigs - Google+]</ref> had suggested the name Fritz for the chess program <ref>[https://en.chessbase.com/post/the-chebase-christmas-party-part-1 The ChessBase Christmas Party – part 1], [[ChessBase|ChessBase News]], December 28, 2010</ref> .
=Selected Games=
==Deep Blue Prototype==
<span id="DBlueFritz">[[WCCC 1995]], round 5, [[Deep Blue|Deep Blue Prototype]] - [[Fritz]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=29&round=5&id=4 Shatin 1995, Chess, Round 5, Game 4]</ref>
<pre>
[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
</pre>
: [https://en.lichess.org/vTaSbJj1 Game on Lichess.org]
<span id="Playoff"></span>
==Star Socrates==
[[FILE:WCCC1995Playoff.jpg|none|border|text-bottom]]
[[WCCC 1995]] Playoff, [[Star Socrates]] - [[Fritz]], [[Chris Joerg]], [[Don Dailey]], [[Frans Morsch]], and [[Mathias Feist]] @ 26... Nd5 <ref>Image by [[Jaap van den Herik]], [[ICGA Journal#18_2|ICCA Journal, Vol. 18, No. 2]], pp. 81</ref> <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=29&round=6&id=1 Shatin 1995 - Chess - Round 6 - Game 1 (ICGA Tournaments)]</ref>
<pre>
[Event "WCCC 1995"]
[Site "Chinesse University HKG"]
[Date "1995.05.30"]
[Round "6"]
[White "Star Socrates"]
[Black "Fritz"]
[Result "0-1"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.Nxe5 Nxe5 6.d4 a6 7.Ba4 Nxe4 8.Qe2 Be7
9.Qxe4 Ng6 10.f4 O-O 11.Bb3 Bf6 12.Nc3 c6 13.Qd3 d5 14.Be3 b6 15.f5 Ne7 16.Rf3
c5 17.dxc5 d4 18.Rd1 Bb7 19.Bxd4 Bxf3 20.gxf3 Bxd4+ 21.Qxd4 Qxd4+ 22.Rxd4 bxc5
23.Rf4 Rac8 24.Bc4 Rc6 25.Ne4 Rd8 26.Kf2 Nd5 27.Rg4 Kf8 28.Rh4 Nf6 29.Ke3 h6
30.b3 Rd1 31.a3 Ra1 32.a4 Rd1 33.Bd3 Ke7 34.Ke2 Rg1 35.Rh3 Nd5 36.Rg3 Rh1 37.Rxg7
Rxh2+ 38.Kf1 Kf8 39.Rg3 Rh5 40.Kf2 Nb4 41.f6 Nd5 42.Rg1 Nxf6 43.Rd1 Re5 44.Nd2
Nd5 45.Nc4 Rg5 46.Be4 Nc3 47.Bxc6 Nxd1+ 48.Ke1 Nc3 49.f4 Rh5 50.Kd2 Nd5 51.Bb7
Ke7 52.Kc1 Nxf4 53.Bxa6 Rh2 54.Ne3 Ne2+ 55.Kb2 Nd4 56.Bc4 Nc6 57.Bb5 Na5 58.Nc4
Nxc4+ 59.Bxc4 f5 60.a5 Kd6 61.Kc3 h5 62.a6 Kc7 63.Be6 Rf2 64.a7 Kb7 65.Kd3 h4
66.a8=Q+ Kxa8 67.Ke3 Rxc2 68.Bxf5 Rc3+ 69.Kf2 Rxb3 70.Be4+ Ka7 71.Bd5 Rb2+
72.Kg1 h3 73.Be6 h2+ 74.Kh1 Ka6 75.Bd5 0-1
</pre>
: [https://en.lichess.org/MAFG0PKl Game on Lichess.org]
=Null Move=
Frans Morsch, as well as other Dutch computer chess programmers like [[Bart Weststrate]] and [[Dap Hartmann]] <ref>[[Chrilly Donninger]] ('''1994'''). ''Die Kunst des Nichtstuns''. [[Computerschach und Spiele|CSS]] 2/94, [http://www.mustrum.de/chrilly/nullmove.pdf pdf] (German)</ref> , did early experiments with [[Recursion|recursive]] [[Null Move Pruning|null move pruning]] in the late 80s, likely after it was discussed at the panel workshop during the [[WCCC 1986]] after [[Don Beal|Don Beal's]] talk covering null move <ref>[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=288321&t=28775 Re: SOMA] by [[Ed Schroder]], [[CCC]], August 26, 2009</ref> <ref>[http://www.hiarcs.net/forums/viewtopic.php?p=2944 Re: Search or Evaluation?] by [[Mark Uniacke]], [[Computer Chess Forums|Hiarcs Forum]], October 14, 2007</ref> . Frans Morsch told [[Chrilly Donninger]] about recursive null move, who popularized it by his ''Null Move and Deep Search'' paper in the [[ICGA Journal|ICCA Journal]] 1993 <ref>[[Chrilly Donninger]]. ('''1993'''). ''Null Move and Deep Search: Selective-Search Heuristics for Obtuse Chess Programs.'' [[ICGA Journal|ICCA Journal]], [http://people.csail.mit.edu/heinz/iccaj_db/node4.html Vol. 16, No. 3], pp. 137-143</ref> .
=Descriptions=
from the [[ICGA]] tournament page <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=27 Fritz' ICGA Tournaments]</ref> :
==1995==
Fritz is built around a selective search technique known as null-move search. As part of its search, Fritz allows one side to move twice (the other side does a null-move). If the position after the null-move does not return a high value in the evaluation function, then clearly the first of the two moves did not contain a threat. This applies to 95% of the moves in a search. Detecting such moves before they are searched to the full depth is an excellent method to speed-up the search. In its latest version, Fritz manages a 10-times speed-up over a version without the null-move search. Selective search unavoidably introduces oversights, but these are few. In tournaments against humans and other programs, Fritz has proven to be a tough opponent when defending difficult positions.
==1997==
Fritz won the ICCA chess computer world championship in Hong Kong 1995 beating a prototype of the Deep Blue chess computer. It obtained the best computer result in the 1996 man-computer Aegon tournament. Fritz is build around a selective search technique known as the null-move search. Move generators, evaluation functions and data structures have been designed specially to maximise the effectiveness of the null-move search. If anything, Fritz is fast. The search engine is written in highly optimised assembly language. The present version searches at a rate of one thousand processor cycles per position. The openings book was constructed from grandmaster games. Fritz learns from his games and adjusts the probability weights in the openings book automatically.
==1999==
Fritz is build around a selective search technique known as the null-move search. As part of its search, Fritz allows one side to move twice (the other side does a null-move). This allows the program to detect weak moves before they are searched to their full depth. Move generators, evaluation functions and data structures have been designed to maximize the effectiveness of the null-move search. Fritz is the winner of the previous computerchess world championship in Hong Kong 1995. 1993 Fritz tied for 1st place in a Blitz tournament in Munich with the complete world elite. It scored the best computer result in the 1996 man-computer Aegon tournament. In 1998 Fritz was leading the prestigious Swedish rating list. It won an active chess tournament Frankfurt 1998 with a full point ahead of 36 grandmasters.
<span id="DeepFritz"></span>
=Deep Fritz=
Deep Fritz is the engine designed for [https://en.wikipedia.org/wiki/Multiprocessing multiprocessing] and [[Parallel Search|parallel search]], it first appeared as Deep Fritz 6 in 2000. Since version 14 by [[Gyula Horváth]], Deep is obligatory.
<span id="SSSstar"></span>
=Fritz SSS=
A Fritz version called SSS <ref>[http://www.365chess.com/players/Comp_Fritz_SSS Comp Fritz SSS chess games - 365Chess.com]</ref> or even SSS* <ref>[[Jaap van den Herik]] ('''2000'''). ''De toekomst van het schaaken''. Schaakmagazine, 5/2000, [http://www.schaakcomputers.nl/hein_veldhuis/database/files/05-2000,%20Schaakmagazine,%20Jaap%20van%20den%20Herik,%20De%20toekomst%20van%20het%20schaken.pdf pdf] hosted by [[Hein Veldhuis]]</ref> that played the [https://en.wikipedia.org/wiki/Dutch_Chess_Championship Dutch Chess Championship] 2000 in [https://en.wikipedia.org/wiki/Rotterdam Rotterdam], becoming third with 7/11 behind [https://en.wikipedia.org/wiki/Loek_van_Wely Loek van Wely], and [https://en.wikipedia.org/wiki/Jeroen_Piket Jeroen Piket], shared with [https://en.wikipedia.org/wiki/Sergei_Tiviakov Sergei Tiviakov] and [https://en.wikipedia.org/wiki/Paul_van_der_Sterren Paul van der Sterren] <ref>[http://www.365chess.com/tournaments/NED-ch_2000/5890 NED-ch 2000 - 365Chess.com Tournaments]</ref>, was not related to the [[SSS* and Dual*|SSS*]] search algorithm, but to the three primary sponsors of the event <ref>[https://www.stmintz.com/ccc/index.php?id=110850 Fritz SSS uses *SSS?] by [[Bas Hamstra]], [[CCC]], May 15, 2000</ref> <ref>[https://www.stmintz.com/ccc/index.php?id=110856 Re: Fritz SSS uses *SSS?] by [[Robert Hyatt]], [[CCC]], May 15, 2000</ref>.
<span id="PocketFritz"></span>
=Pocket Fritz=
Pocket Fritz is a chess program for [https://en.wikipedia.org/wiki/PocketPC PocketPC] [https://en.wikipedia.org/wiki/Personal_digital_assistant 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]] <ref>[http://www.grailmaster.com/misc/chess/comp/chessrev/chessreview.html Chess Programs for Pocket PC and Palm devices] by [[Dr. Axel Schumacher]]</ref> .
<span id="FritzGUI"></span>
=Fritz User Interface=
==Fritz 1==
[[FILE:fritz1.JPG|none|border|text-bottom|640px|link=http://www.septober.de/chess/pics/9104.gif]]
The original Fritz [[MS-DOS]] [[GUI|Graphical User Interface]] from 1991 <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [[Herbert Marquardt]]</ref>
==Fritz 5==
[[FILE:fritz5.JPG|none|border|text-bottom|link=http://www.septober.de/chess/pics/fritz5.GIF]]
Fritz 5 [[Windows]] [[GUI|Graphical User Interface]] <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [[Herbert Marquardt]]</ref>
<span id="DeepFritz14"></span>
==Deep Fritz 14==
Deep Fritz [[GUI]] is suited to run other [[ChessBase]] or [[UCI Engines|UCI engines]] with either using its own proprietary protocol, as well as the [[UCI]] protocol.
[[FILE:DeepFritz14d_1.jpg|none|border|text-bottom|640px|link=http://shop.chessbase.com/en/products/deep_fritz_14_english]]
Deep Fritz 14 GUI <ref>[http://shop.chessbase.com/en/products/deep_fritz_14_english Deep Fritz 14] from [[ChessBase]]</ref>
=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|opening book]] format
* [[Fridolin]]
* [[Various Classifications#GivenName|Given Name]]
* [[Knowledge#SearchVersusEvaluation|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|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|Computer Chess Reports, Vol. 5, No. 2]], pp. 22
* [[Larry Kaufman]] ('''1995'''). ''Does Fritz deserve to be World Champion?'' [[Selective Search]] 60, pp 3, [http://www.chesscomputeruk.com/SS_60.pdf pdf] hosted by [[Mike Watters]]
* [[Karsten Müller]] ('''2002'''). ''The Clash of the Titans: Kramnik – Fritz Bahrain''. [[ICGA Journal#25_4|ICGA Journal, Vol. 25, No. 4]] » [[Kramnik versus Deep Fritz 2002]]
* [[Matthias Wüllenweber]] ('''2002'''). ''The Match from Fritz' View Point''. [[ICGA Journal#25_4|ICGA Journal, Vol. 25, No. 4]]
* [[David Levy]] ('''2003'''). ''Kasparov vs X3D Fritz''. [[ICGA Journal#26_4|ICGA Journal, Vol. 26, No. 4]] » [[Kasparov versus X3D Fritz 2003]]
* [[Christian Liebert]] ('''2005'''). ''Fritz 9: Der König ist zurück''. [[Computerschach und Spiele|Computerschach und Spiele Online]], [http://computerschach.de/Files/2005/Fritz%209:%20Der%20K%C3%B6nig%20ist%20zur%C3%BCck.pdf pdf] (German)
* [[Christian Liebert]] ('''2006'''). ''Fritz die Zehnte''. [[Computerschach und Spiele|Computerschach und Spiele Online]], [http://computerschach.de/Files/2006/Fritz%20die%20Zehnte.pdf pdf] (German)
* [[Matthias Wüllenweber]], [[Frederic Friedel]], [[Mathias Feist]] ('''2006'''). ''Kramnik vs. Deep Fritz 10: Computer wins match by 4-2''. [[ICGA Journal#29_4|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, [http://www.chesscomputeruk.com/SS_128.pdf pdf] hosted by [[Mike Watters]]
=Forum Posts=
==1991 ...==
* [https://groups.google.com/d/msg/rec.games.chess/ppLgYSEF5k8/YCTdbmKwNTkJ Commercial Chess Programs] by [[Michael Valvo|Mike Valvo]], [[Computer Chess Forums|rgc]], July 19, 1991 » [[ChessMachine]], [[MChess]], [[Zarkov]]
* [https://groups.google.com/d/msg/rec.games.chess/l7uR6fE9vD0/WjfBvx9jXrEJ KnightStalker Demo] by Benjamin Lin, [[Computer Chess Forums|rgc]], December 29, 1992
* [https://groups.google.com/d/msg/rec.games.chess/SQ0yY1WJBew/pwEz0FxLA2kJ ChessBase for Windows and/or Fritz 3 Review] by [[Johannes Fürnkranz]], [[Computer Chess Forums|rgc]], September 06, 1994 » [[ChessBase (Database)]]
* [https://groups.google.com/d/msg/rec.games.chess/VYMBJh4-e5s/c9YBxarT3OUJ Fritz 3 ELO on different computers] by [[Moritz Berger]], [[Computer Chess Forums|rgc]], September 19, 1994
==1995 ...==
* [https://groups.google.com/d/msg/rec.games.chess/b5hHd6N_cqA/ncqkRRuZlk0J Fritz 3 Makes IM Norm] by Michel Behna, [[Computer Chess Forums|rgc]], January 31, 1995
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/39985e763f042a25 Deep Thought /WCCC Round 5 vs Fritz] by [[Robert Hyatt]], [[Computer Chess Forums|rec.games.chess]], May 31, 1995 » [[WCCC 1995]]
* [https://groups.google.com/d/msg/rec.games.chess.computer/Q0RNJrjhj4M/KTaY6xW-OvkJ Fritz 4 and the SSDF] by [[Moritz Berger]], [[Computer Chess Forums|rgcc]], June 27, 1996 » [[SSDF]]
* [https://www.stmintz.com/ccc/index.php?id=13605 LCT II results of Reb9, F5, and H6 on K6/233] by [[Albert Silver]], [[CCC]], January 03, 1998 » [[LCT II]], [[Rebel]], [[Hiarcs]]
* [https://www.stmintz.com/ccc/index.php?id=14908 Fritz 5] by [[Didzis Cirulis]], [[CCC]], February 06, 1998
* [https://www.stmintz.com/ccc/index.php?id=45498 Multi-Fritz with Boss versus IM R. Vasquez] by [[Ingo Althöfer]], [[CCC]], March 09, 1999 <ref>[https://en.wikipedia.org/wiki/Rodrigo_V%C3%A1squez_Schroder Rodrigo Vásquez Schroder - Wikipedia]</ref>
* [https://www.stmintz.com/ccc/index.php?id=63261 Tactical monsters: Fritz5.32 and Goliath 2.05] by [[Jouni Uski]], [[CCC]], August 03, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=121789 How make Fritz execute brute force search?] by [[Leonid Liberman|Leonid]], [[CCC]], July 26, 2000
* [https://www.stmintz.com/ccc/index.php?id=122370 Junior chess program. Just version of Fritz 5?] by [[Leonid Liberman|Leonid]], [[CCC]], July 29, 2000 » [[Junior]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=36819&p=139614#p139734 Re: Fritz protocol] by [[Odd Gunnar Malin]], [[Computer Chess Forums|Winboard Forum]], April 14, 2002 » [[Wb2UCI]]
* [https://www.stmintz.com/ccc/index.php?id=237094 Re: Something new about Fritz? English] by [[Sven Reichard]], [[CCC]], June 23, 2002
* [https://www.stmintz.com/ccc/index.php?id=237195 Re: Something new about Fritz? English, part 2] by [[Sven Reichard]], [[CCC]], June 24, 2002 » [[Eduard Nemeth]]
* [https://www.stmintz.com/ccc/index.php?id=289637 Request for link to Eduard Nemeth messages about Fritz 8.0.0.23] by [[Javier Ros Padilla]], [[CCC]], March 17, 2003 » [[Eduard Nemeth]]
* [https://www.stmintz.com/ccc/index.php?id=356131 Re: Shredder 8 secret: search depth?] by [[Vasik Rajlich]], [[CCC]], March 23, 2004 » [[Depth]], [[Shredder]], [[Junior]]
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=39244 Fritz 12] by [[Alexander Schmidt]], [[CCC]], May 31, 2011
* [http://www.talkchess.com/forum/viewtopic.php?start=0&t=40795&topic_view=threads Fritz and Naum shown as Rybka/Strelka clones] by [[Kai Laskos]], [[CCC]], October 17, 2011
* [http://www.open-chess.org/viewtopic.php?f=5&t=1679 Deep Fritz 11 eval] by [[Mark Watkins|BB+]], [[Computer Chess Forums|OpenChess Forum]], October 23, 2011
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=23488 Are Fritz and Naum Rybka/Strelka clones?] by [[Søren Riis|SR]], [[Computer Chess Forums|Rybka Forum]], November 09, 2011
* [http://www.talkchess.com/forum/viewtopic.php?t=50149 New Fritz author?] by John Hartmann, [[CCC]], November 19, 2013
: [http://www.talkchess.com/forum/viewtopic.php?t=50149&start=25 Re: New Fritz author?] by [[Albert Silver]], [[CCC]], November 20, 2013
* [http://www.talkchess.com/forum/viewtopic.php?t=50174&start=1 Re: First Impressions (Deep Fritz 14)?] by [[Albert Silver]], [[CCC]], November 22, 2013
* [http://www.talkchess.com/forum/viewtopic.php?t=50307 Allegations that Deep Fritz 14....] by [[Dr.Wael Deeb]], [[CCC]], Engine Origins, December 03, 2013
* [http://www.open-chess.org/viewtopic.php?f=5&t=2531 Fritz 11] by [[Ed Schroder|Rebel]], [[Computer Chess Forums|OpenChess Forum]], December 10, 2013 <ref>[http://www.top-5000.nl/fritz.htm Measuring similarity native ChessBase engines] by [[Ed Schroder|Ed Schröder]]</ref>
* [http://www.talkchess.com/forum/viewtopic.php?t=50291 ChessBase / Fritz interface running on Ubuntu?] by [[Norbert Raimund Leisner]], [[CCC]], December 17, 2013 » [[Linux]]
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=57071 Fritz 15 (Vas Rajlich?)] by [[Graham Banks]], [[CCC]], July 24, 2015 » [[Vasik Rajlich]]
* [http://www.talkchess.com/forum/viewtopic.php?t=58306 Fritz 15.0] by Tim Shackel, [[CCC]], November 20, 2015
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=30916 "Sampled search" ?] by albitex, [[Computer Chess Forums|Rybka Forum]], February 23, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=65706 Fritz 16] by David Shanholtzer, [[CCC]], November 12, 2017
=External Links=
==Chess Engine==
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=27 Fritz' ICGA Tournaments]
* [https://en.wikipedia.org/wiki/Fritz_%28chess%29 Fritz (chess) from Wikipedia]
* [https://en.wikipedia.org/wiki/Pocket_Fritz Pocket Fritz from Wikipedia]
* [http://www.chessgames.com/perl/chessplayer?pid=15948 The chess games of Fritz] from [http://www.chessgames.com/index.html chessgames.com]
* [http://www.top-5000.nl/cp.htm Download Chess Programs] hosted by [[Ed Schroder|Ed Schröder]] (Fritz 5.32)
* [http://correspondencechess.com/campbell/ham/ham.htm The Campbell Report - Computer CC Challenge Match]
* [http://www.top-5000.nl/fritz.htm Measuring similarity native ChessBase engines] by [[Ed Schroder|Ed Schröder]]
===Purchase===
* [http://shop.chessbase.com/en/products/fritz_16_english Fritz 16 - English Version] - [[ChessBase|ChessBase Shop]]
: [http://help.chessbase.com/Fritz/16/Eng/index.html Fritz Help]
* [https://shop.chessbase.com/en/products/fritz_15_english Fritz 15 - English Version], [[ChessBase|ChessBase Shop]]
* [http://www.chessbase-shop.com/en/products/deep_fritz_14_english Deep Fritz 14] - [[ChessBase|ChessBase Shop]]
===ChessBase News===
* [http://en.chessbase.com/post/fritz-defends-to-draw-game-8-and-the-match-final-score-4-4 Fritz Defends to Draw Game 8 and the Match! Final Score: 4-4] The Brains in Bahrain Man-Machine match is over, from [[ChessBase|ChessBase News]], October 19, 2002
* [http://en.chessbase.com/post/kasparov-vs-x3d-fritz-match-finishes-2-2-after-game-four-draw Kasparov vs X3D Fritz match finishes 2-2 after game four draw] from [[ChessBase|ChessBase News]], November 19, 2003
* [http://en.chessbase.com/post/deep-fritz-8-review-by-steve-lopez Deep Fritz 8 review] by [[Steve Lopez]], [[ChessBase|ChessBase News]], December 27, 2003
* [https://en.chessbase.com/post/mate-search-in-fritz Mate search in Fritz] by [[Steve Lopez]], [[ChessBase|ChessBase News]], August 07, 2004
* [https://en.chessbase.com/post/fritz-9-3d-boards-part-1 Fritz 9 3D boards – part 1] by [[Steve Lopez]], [[ChessBase|ChessBase News]], January 10, 2006
* [https://en.chessbase.com/post/fritz-9-3d-boards-part-2/7 Fritz 9 3D boards – part 2] by [[Steve Lopez]], [[ChessBase|ChessBase News]], January 17, 2006
* [https://en.chessbase.com/post/fritz-9-3d-boards-part-3 Fritz 9 3D boards – part 3] by [[Steve Lopez]], [[ChessBase|ChessBase News]], January 25, 2006
* [http://en.chessbase.com/post/man-vs-machine-shocker-kramnik-allows-mate-in-one Man vs machine shocker: Kramnik allows mate in one], [https://en.wikipedia.org/wiki/Bonn Bonn], November 27, 2006
* [http://en.chessbase.com/post/kramnik-vs-deep-fritz-computer-wins-match-by-4-2 Kramnik vs Deep Fritz: Computer wins match by 4:2], [[ChessBase|ChessBase News]], December 05, 2006
* [http://en.chessbase.com/post/order-now-deep-fritz-12-is-shipping Deep Fritz 12 – an interview with the author], [[ChessBase|ChessBase News]], February 17, 2010
* [http://en.chessbase.com/post/fritz-13-is-now-available-let-s-check-who-needs-it- Fritz 13 is now available – let's check who needs it!], [[ChessBase|ChessBase News]], October 13, 2011
* [http://en.chessbase.com/post/deep-fritz-13-with-blow-your-mind-functions Deep Fritz 13 with blow-your-mind functions], [[ChessBase|ChessBase News]], June 08, 2012
* [http://en.chessbase.com/post/deep-fritz-14-faster-better-cheaper Deep Fritz 14: Faster, better, cheaper], [[ChessBase|ChessBase News]], November 20, 2013
* [http://en.chessbase.com/post/deep-fritz-14-elo-3150-on-your-computer Deep Fritz 14 – Elo 3150 on your computer] by [http://www.365chess.com/players/Sean_Marsh Sean Marsh], [[ChessBase|ChessBase News]], January 28, 2014
* [http://en.chessbase.com/post/from-chess-challenger-to-deep-fritz-14 From Chess Challenger to Deep Fritz 14] by [[Ken Blake]], [[ChessBase|ChessBase News]], February 27, 2014 » [[Chess Challenger]]
* [http://en.chessbase.com/post/analyzing-your-games-with-fritz-part-one Analyzing your games with Fritz (Part one)] by [[Albert Silver]], [[ChessBase|ChessBase News]], June 02, 2014
* [http://en.chessbase.com/post/analyzing-your-games-with-fritz-part-two Analyzing your games with Fritz (Part two)] by [[Albert Silver]], [[ChessBase|ChessBase News]], June 04, 2014
* [http://en.chessbase.com/post/analyzing-your-games-with-fritz-part-three Analyzing your games with Fritz (Part three)] by [[Albert Silver]], [[ChessBase|ChessBase News]], June 07, 2014
* [http://en.chessbase.com/post/deep-fritz-14-now-with-chessbase-for-android Deep Fritz 14 now with ChessBase for Android] by [[Albert Silver]], [[ChessBase|ChessBase News]], February 23, 2015 » [[Android]]
* [http://en.chessbase.com/post/using-deep-fritz-14-on-a-smartphone Using Deep Fritz 14 on a smartphone] by [https://www.uea.ac.uk/pharmacy/people/profile/a-ganesan A. Ganesan], [[ChessBase|ChessBase News]], April 13, 2015 » [[Android]]
* [http://en.chessbase.com/post/come-and-get-it-fritz-15-released Come and get it – Fritz 15 released!], [[ChessBase|ChessBase News]], November 25, 2015
* [http://en.chessbase.com/post/fritz-15-engine-questions-and-answers Fritz 15 engine - questions and answers] by [[Albert Silver]], [[ChessBase|ChessBase News]], January 04, 2016
* [http://en.chessbase.com/post/using-your-home-chess-engine-anytime-anywhere Using your home chess engine anytime, anywhere] by [[Albert Silver]], [[ChessBase|ChessBase News]], May 09, 2017
* [http://en.chessbase.com/post/fritz-16-your-companion-and-trainer Fritz 16 – your companion and trainer], [[ChessBase|ChessBase News]], November 12, 2017
* [https://en.chessbase.com/post/fritz-16-a-fun-and-instructive-opponent Fritz 16 — a fun and instructive opponent] by [[Albert Silver]], [[ChessBase|ChessBase News]], December 11, 2017
===Rating Lists===
* [http://www.computerchess.org.uk/ccrl/4040/cgi/engine_details.cgi?match_length=30&each_game=1&print=Details&each_game=1&eng=Fritz%2015%2064-bit%204CPU#Fritz_15_64-bit_4CPU Fritz 15 64-bit 4CPU] in [[CCRL|CCRL 40/40]]
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Fritz&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Fritz family] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wikipedia.org/wiki/Fritz Fritz from Wikipedia]
* [https://en.wikipedia.org/wiki/Fritz_the_Cat Fritz the Cat from Wikipedia]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[FILE:UnserFritz20160916.JPG|border|right|thumb|link=https://commons.wikimedia.org/wiki/File:Herne_-_Kulturpark_Unser_Fritz_-_2-3_03_ies.jpg|Unser Fritz 2/3, protego sundial and machine hall <ref>Former [https://en.wikipedia.org/wiki/Coal_mining coal mine] [https://de.wikipedia.org/wiki/Zeche_Unser_Fritz Unser Fritz 2/3] in [https://en.wikipedia.org/wiki/Herne,_North_Rhine-Westphalia Herne, North Rhine-Westphalia], Germany, now artist-studio, exhibition and event space, and part of [[Arts#IndustrialHeritageTrail|The Industrial Heritage Trail]] of the [https://en.wikipedia.org/wiki/Ruhr Ruhr area] - Image of [https://de.wikipedia.org/wiki/Protegohaube protegohaube] ([https://en.wikipedia.org/wiki/Flame_arrester flame arrester]) as [https://en.wikipedia.org/wiki/Gnomon gnomon] of a [https://en.wikipedia.org/wiki/Sundial sundial] and machine halls behind by [[Gerd Isenberg]], [https://en.wikipedia.org/wiki/Pedelec bike] tour, September 16, 2016. [https://de.wikipedia.org/wiki/Unser_Fritz/Crange Unser Fritz/Crange] is further district of Herne (Wanne), famous for its funfair [https://en.wikipedia.org/wiki/Cranger_Kirmes Cranger Kirmes], and [http://www.sv-unser-fritz.de/ SV Unser Fritz] the local chess club - eponym of the coal mine was [https://en.wikipedia.org/wiki/Frederick_III,_German_Emperor Frederick III, German Emperor], see also [http://www.kuenstlerzeche.de/zeche/zeche_chronik_fs.html Künstlerzeche Unser Fritz 2/3 - Chronik] (German) and [https://commons.wikimedia.org/wiki/File:Herne_-_Kulturpark_Unser_Fritz_-_2-3_03_ies.jpg 2011 Image] by [https://commons.wikimedia.org/wiki/User:Ies/L_Herne Frank Vincentz]</ref> ]]
'''Fritz''' (early versions called '''Knightstalker''' in the USA),<br/>
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]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=50149 New Fritz author?] by John Hartmann, [[CCC]], November 19, 2013</ref>, and Fritz '''15''' in November 2015 by [[Vasik Rajlich]] <ref>[https://shop.chessbase.com/en/products/fritz_15_english Fritz 15 - English Version], [[ChessBase|ChessBase Shop]]</ref> <ref>[http://en.chessbase.com/post/fritz-15-engine-questions-and-answers Fritz 15 engine - questions and answers] by [[Albert Silver]], [[ChessBase|ChessBase News]], January 04, 2016</ref>. 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 [[GUI|Graphical User Interface]] <ref>[https://en.chessbase.com/post/christmas-dinner-on-a-train-meet-the-chebase-team Christmas dinner on a train – meet the ChessBase team] from [[ChessBase|ChessBase News]], December 23, 2003</ref> . 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 [[WCCC 1995#DBlueFritz|notable game]] versus [[Deep Blue]] [https://www.game-ai-forum.org/icga-tournaments/program.php?id=349 prototype] <ref>[[Fabian Mäser]] ('''1995'''). ''Fritz vs. [[Deep Blue]]: Opening Book vs, Opening Book''. [[Computer Chess Reports|Computer Chess Reports Vol. 5 No. 2]] pp. 22, [[WCCC 1995]]</ref> and the [[WCCC 1995#Playoff|playoff]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=29&round=6&id=1 Shatin 1995, Chess, Round 6, Game 1]</ref> against [[Star Socrates]].
=Etymology=
The given name Fritz originated as a German nickname for [https://en.wikipedia.org/wiki/Friedrich_%28given_name%29 Friedrich], or [https://en.wikipedia.org/wiki/Frederick_%28given_name%29 Frederick] (der "Alte Fritz" was a nickname for [https://en.wikipedia.org/wiki/Frederick_II_of_Prussia King Frederick II of Prussia], and of [https://en.wikipedia.org/wiki/Frederick_III,_German_Emperor Frederick III, German Emperor] <ref>[https://de.wikipedia.org/wiki/Der_alte_Fritz_(1928) Der alte Fritz (1928) Wikipedia.de] (German)</ref>), as well as for similar names including [[Fridolin]]. Fritz was also a name given to German troops by the British and others in the [https://en.wikipedia.org/wiki/World_War_I first] and [https://en.wikipedia.org/wiki/World_War_II second world wars], equivalent to [https://en.wikipedia.org/wiki/Tommy_Atkins Tommy], as the British troops were called by German and other troops <ref>[https://en.wikipedia.org/wiki/Fritz Fritz from Wikipedia]</ref> . Creative ChessBase partner Olaf Oldigs <ref>[https://plus.google.com/112441411820050102952/about Olaf Oldigs - Google+]</ref> had suggested the name Fritz for the chess program <ref>[https://en.chessbase.com/post/the-chebase-christmas-party-part-1 The ChessBase Christmas Party – part 1], [[ChessBase|ChessBase News]], December 28, 2010</ref> .
=Selected Games=
==Deep Blue Prototype==
<span id="DBlueFritz">[[WCCC 1995]], round 5, [[Deep Blue|Deep Blue Prototype]] - [[Fritz]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=29&round=5&id=4 Shatin 1995, Chess, Round 5, Game 4]</ref>
<pre>
[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
</pre>
: [https://en.lichess.org/vTaSbJj1 Game on Lichess.org]
<span id="Playoff"></span>
==Star Socrates==
[[FILE:WCCC1995Playoff.jpg|none|border|text-bottom]]
[[WCCC 1995]] Playoff, [[Star Socrates]] - [[Fritz]], [[Chris Joerg]], [[Don Dailey]], [[Frans Morsch]], and [[Mathias Feist]] @ 26... Nd5 <ref>Image by [[Jaap van den Herik]], [[ICGA Journal#18_2|ICCA Journal, Vol. 18, No. 2]], pp. 81</ref> <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=29&round=6&id=1 Shatin 1995 - Chess - Round 6 - Game 1 (ICGA Tournaments)]</ref>
<pre>
[Event "WCCC 1995"]
[Site "Chinesse University HKG"]
[Date "1995.05.30"]
[Round "6"]
[White "Star Socrates"]
[Black "Fritz"]
[Result "0-1"]
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.Nxe5 Nxe5 6.d4 a6 7.Ba4 Nxe4 8.Qe2 Be7
9.Qxe4 Ng6 10.f4 O-O 11.Bb3 Bf6 12.Nc3 c6 13.Qd3 d5 14.Be3 b6 15.f5 Ne7 16.Rf3
c5 17.dxc5 d4 18.Rd1 Bb7 19.Bxd4 Bxf3 20.gxf3 Bxd4+ 21.Qxd4 Qxd4+ 22.Rxd4 bxc5
23.Rf4 Rac8 24.Bc4 Rc6 25.Ne4 Rd8 26.Kf2 Nd5 27.Rg4 Kf8 28.Rh4 Nf6 29.Ke3 h6
30.b3 Rd1 31.a3 Ra1 32.a4 Rd1 33.Bd3 Ke7 34.Ke2 Rg1 35.Rh3 Nd5 36.Rg3 Rh1 37.Rxg7
Rxh2+ 38.Kf1 Kf8 39.Rg3 Rh5 40.Kf2 Nb4 41.f6 Nd5 42.Rg1 Nxf6 43.Rd1 Re5 44.Nd2
Nd5 45.Nc4 Rg5 46.Be4 Nc3 47.Bxc6 Nxd1+ 48.Ke1 Nc3 49.f4 Rh5 50.Kd2 Nd5 51.Bb7
Ke7 52.Kc1 Nxf4 53.Bxa6 Rh2 54.Ne3 Ne2+ 55.Kb2 Nd4 56.Bc4 Nc6 57.Bb5 Na5 58.Nc4
Nxc4+ 59.Bxc4 f5 60.a5 Kd6 61.Kc3 h5 62.a6 Kc7 63.Be6 Rf2 64.a7 Kb7 65.Kd3 h4
66.a8=Q+ Kxa8 67.Ke3 Rxc2 68.Bxf5 Rc3+ 69.Kf2 Rxb3 70.Be4+ Ka7 71.Bd5 Rb2+
72.Kg1 h3 73.Be6 h2+ 74.Kh1 Ka6 75.Bd5 0-1
</pre>
: [https://en.lichess.org/MAFG0PKl Game on Lichess.org]
=Null Move=
Frans Morsch, as well as other Dutch computer chess programmers like [[Bart Weststrate]] and [[Dap Hartmann]] <ref>[[Chrilly Donninger]] ('''1994'''). ''Die Kunst des Nichtstuns''. [[Computerschach und Spiele|CSS]] 2/94, [http://www.mustrum.de/chrilly/nullmove.pdf pdf] (German)</ref> , did early experiments with [[Recursion|recursive]] [[Null Move Pruning|null move pruning]] in the late 80s, likely after it was discussed at the panel workshop during the [[WCCC 1986]] after [[Don Beal|Don Beal's]] talk covering null move <ref>[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=288321&t=28775 Re: SOMA] by [[Ed Schroder]], [[CCC]], August 26, 2009</ref> <ref>[http://www.hiarcs.net/forums/viewtopic.php?p=2944 Re: Search or Evaluation?] by [[Mark Uniacke]], [[Computer Chess Forums|Hiarcs Forum]], October 14, 2007</ref> . Frans Morsch told [[Chrilly Donninger]] about recursive null move, who popularized it by his ''Null Move and Deep Search'' paper in the [[ICGA Journal|ICCA Journal]] 1993 <ref>[[Chrilly Donninger]]. ('''1993'''). ''Null Move and Deep Search: Selective-Search Heuristics for Obtuse Chess Programs.'' [[ICGA Journal|ICCA Journal]], [http://people.csail.mit.edu/heinz/iccaj_db/node4.html Vol. 16, No. 3], pp. 137-143</ref> .
=Descriptions=
from the [[ICGA]] tournament page <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=27 Fritz' ICGA Tournaments]</ref> :
==1995==
Fritz is built around a selective search technique known as null-move search. As part of its search, Fritz allows one side to move twice (the other side does a null-move). If the position after the null-move does not return a high value in the evaluation function, then clearly the first of the two moves did not contain a threat. This applies to 95% of the moves in a search. Detecting such moves before they are searched to the full depth is an excellent method to speed-up the search. In its latest version, Fritz manages a 10-times speed-up over a version without the null-move search. Selective search unavoidably introduces oversights, but these are few. In tournaments against humans and other programs, Fritz has proven to be a tough opponent when defending difficult positions.
==1997==
Fritz won the ICCA chess computer world championship in Hong Kong 1995 beating a prototype of the Deep Blue chess computer. It obtained the best computer result in the 1996 man-computer Aegon tournament. Fritz is build around a selective search technique known as the null-move search. Move generators, evaluation functions and data structures have been designed specially to maximise the effectiveness of the null-move search. If anything, Fritz is fast. The search engine is written in highly optimised assembly language. The present version searches at a rate of one thousand processor cycles per position. The openings book was constructed from grandmaster games. Fritz learns from his games and adjusts the probability weights in the openings book automatically.
==1999==
Fritz is build around a selective search technique known as the null-move search. As part of its search, Fritz allows one side to move twice (the other side does a null-move). This allows the program to detect weak moves before they are searched to their full depth. Move generators, evaluation functions and data structures have been designed to maximize the effectiveness of the null-move search. Fritz is the winner of the previous computerchess world championship in Hong Kong 1995. 1993 Fritz tied for 1st place in a Blitz tournament in Munich with the complete world elite. It scored the best computer result in the 1996 man-computer Aegon tournament. In 1998 Fritz was leading the prestigious Swedish rating list. It won an active chess tournament Frankfurt 1998 with a full point ahead of 36 grandmasters.
<span id="DeepFritz"></span>
=Deep Fritz=
Deep Fritz is the engine designed for [https://en.wikipedia.org/wiki/Multiprocessing multiprocessing] and [[Parallel Search|parallel search]], it first appeared as Deep Fritz 6 in 2000. Since version 14 by [[Gyula Horváth]], Deep is obligatory.
<span id="SSSstar"></span>
=Fritz SSS=
A Fritz version called SSS <ref>[http://www.365chess.com/players/Comp_Fritz_SSS Comp Fritz SSS chess games - 365Chess.com]</ref> or even SSS* <ref>[[Jaap van den Herik]] ('''2000'''). ''De toekomst van het schaaken''. Schaakmagazine, 5/2000, [http://www.schaakcomputers.nl/hein_veldhuis/database/files/05-2000,%20Schaakmagazine,%20Jaap%20van%20den%20Herik,%20De%20toekomst%20van%20het%20schaken.pdf pdf] hosted by [[Hein Veldhuis]]</ref> that played the [https://en.wikipedia.org/wiki/Dutch_Chess_Championship Dutch Chess Championship] 2000 in [https://en.wikipedia.org/wiki/Rotterdam Rotterdam], becoming third with 7/11 behind [https://en.wikipedia.org/wiki/Loek_van_Wely Loek van Wely], and [https://en.wikipedia.org/wiki/Jeroen_Piket Jeroen Piket], shared with [https://en.wikipedia.org/wiki/Sergei_Tiviakov Sergei Tiviakov] and [https://en.wikipedia.org/wiki/Paul_van_der_Sterren Paul van der Sterren] <ref>[http://www.365chess.com/tournaments/NED-ch_2000/5890 NED-ch 2000 - 365Chess.com Tournaments]</ref>, was not related to the [[SSS* and Dual*|SSS*]] search algorithm, but to the three primary sponsors of the event <ref>[https://www.stmintz.com/ccc/index.php?id=110850 Fritz SSS uses *SSS?] by [[Bas Hamstra]], [[CCC]], May 15, 2000</ref> <ref>[https://www.stmintz.com/ccc/index.php?id=110856 Re: Fritz SSS uses *SSS?] by [[Robert Hyatt]], [[CCC]], May 15, 2000</ref>.
<span id="PocketFritz"></span>
=Pocket Fritz=
Pocket Fritz is a chess program for [https://en.wikipedia.org/wiki/PocketPC PocketPC] [https://en.wikipedia.org/wiki/Personal_digital_assistant 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]] <ref>[http://www.grailmaster.com/misc/chess/comp/chessrev/chessreview.html Chess Programs for Pocket PC and Palm devices] by [[Dr. Axel Schumacher]]</ref> .
<span id="FritzGUI"></span>
=Fritz User Interface=
==Fritz 1==
[[FILE:fritz1.JPG|none|border|text-bottom|640px|link=http://www.septober.de/chess/pics/9104.gif]]
The original Fritz [[MS-DOS]] [[GUI|Graphical User Interface]] from 1991 <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [[Herbert Marquardt]]</ref>
==Fritz 5==
[[FILE:fritz5.JPG|none|border|text-bottom|link=http://www.septober.de/chess/pics/fritz5.GIF]]
Fritz 5 [[Windows]] [[GUI|Graphical User Interface]] <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [[Herbert Marquardt]]</ref>
<span id="DeepFritz14"></span>
==Deep Fritz 14==
Deep Fritz [[GUI]] is suited to run other [[ChessBase]] or [[UCI Engines|UCI engines]] with either using its own proprietary protocol, as well as the [[UCI]] protocol.
[[FILE:DeepFritz14d_1.jpg|none|border|text-bottom|640px|link=http://shop.chessbase.com/en/products/deep_fritz_14_english]]
Deep Fritz 14 GUI <ref>[http://shop.chessbase.com/en/products/deep_fritz_14_english Deep Fritz 14] from [[ChessBase]]</ref>
=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|opening book]] format
* [[Fridolin]]
* [[Various Classifications#GivenName|Given Name]]
* [[Knowledge#SearchVersusEvaluation|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|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|Computer Chess Reports, Vol. 5, No. 2]], pp. 22
* [[Larry Kaufman]] ('''1995'''). ''Does Fritz deserve to be World Champion?'' [[Selective Search]] 60, pp 3, [http://www.chesscomputeruk.com/SS_60.pdf pdf] hosted by [[Mike Watters]]
* [[Karsten Müller]] ('''2002'''). ''The Clash of the Titans: Kramnik – Fritz Bahrain''. [[ICGA Journal#25_4|ICGA Journal, Vol. 25, No. 4]] » [[Kramnik versus Deep Fritz 2002]]
* [[Matthias Wüllenweber]] ('''2002'''). ''The Match from Fritz' View Point''. [[ICGA Journal#25_4|ICGA Journal, Vol. 25, No. 4]]
* [[David Levy]] ('''2003'''). ''Kasparov vs X3D Fritz''. [[ICGA Journal#26_4|ICGA Journal, Vol. 26, No. 4]] » [[Kasparov versus X3D Fritz 2003]]
* [[Christian Liebert]] ('''2005'''). ''Fritz 9: Der König ist zurück''. [[Computerschach und Spiele|Computerschach und Spiele Online]], [http://computerschach.de/Files/2005/Fritz%209:%20Der%20K%C3%B6nig%20ist%20zur%C3%BCck.pdf pdf] (German)
* [[Christian Liebert]] ('''2006'''). ''Fritz die Zehnte''. [[Computerschach und Spiele|Computerschach und Spiele Online]], [http://computerschach.de/Files/2006/Fritz%20die%20Zehnte.pdf pdf] (German)
* [[Matthias Wüllenweber]], [[Frederic Friedel]], [[Mathias Feist]] ('''2006'''). ''Kramnik vs. Deep Fritz 10: Computer wins match by 4-2''. [[ICGA Journal#29_4|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, [http://www.chesscomputeruk.com/SS_128.pdf pdf] hosted by [[Mike Watters]]
=Forum Posts=
==1991 ...==
* [https://groups.google.com/d/msg/rec.games.chess/ppLgYSEF5k8/YCTdbmKwNTkJ Commercial Chess Programs] by [[Michael Valvo|Mike Valvo]], [[Computer Chess Forums|rgc]], July 19, 1991 » [[ChessMachine]], [[MChess]], [[Zarkov]]
* [https://groups.google.com/d/msg/rec.games.chess/l7uR6fE9vD0/WjfBvx9jXrEJ KnightStalker Demo] by Benjamin Lin, [[Computer Chess Forums|rgc]], December 29, 1992
* [https://groups.google.com/d/msg/rec.games.chess/SQ0yY1WJBew/pwEz0FxLA2kJ ChessBase for Windows and/or Fritz 3 Review] by [[Johannes Fürnkranz]], [[Computer Chess Forums|rgc]], September 06, 1994 » [[ChessBase (Database)]]
* [https://groups.google.com/d/msg/rec.games.chess/VYMBJh4-e5s/c9YBxarT3OUJ Fritz 3 ELO on different computers] by [[Moritz Berger]], [[Computer Chess Forums|rgc]], September 19, 1994
==1995 ...==
* [https://groups.google.com/d/msg/rec.games.chess/b5hHd6N_cqA/ncqkRRuZlk0J Fritz 3 Makes IM Norm] by Michel Behna, [[Computer Chess Forums|rgc]], January 31, 1995
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/39985e763f042a25 Deep Thought /WCCC Round 5 vs Fritz] by [[Robert Hyatt]], [[Computer Chess Forums|rec.games.chess]], May 31, 1995 » [[WCCC 1995]]
* [https://groups.google.com/d/msg/rec.games.chess.computer/Q0RNJrjhj4M/KTaY6xW-OvkJ Fritz 4 and the SSDF] by [[Moritz Berger]], [[Computer Chess Forums|rgcc]], June 27, 1996 » [[SSDF]]
* [https://www.stmintz.com/ccc/index.php?id=13605 LCT II results of Reb9, F5, and H6 on K6/233] by [[Albert Silver]], [[CCC]], January 03, 1998 » [[LCT II]], [[Rebel]], [[Hiarcs]]
* [https://www.stmintz.com/ccc/index.php?id=14908 Fritz 5] by [[Didzis Cirulis]], [[CCC]], February 06, 1998
* [https://www.stmintz.com/ccc/index.php?id=45498 Multi-Fritz with Boss versus IM R. Vasquez] by [[Ingo Althöfer]], [[CCC]], March 09, 1999 <ref>[https://en.wikipedia.org/wiki/Rodrigo_V%C3%A1squez_Schroder Rodrigo Vásquez Schroder - Wikipedia]</ref>
* [https://www.stmintz.com/ccc/index.php?id=63261 Tactical monsters: Fritz5.32 and Goliath 2.05] by [[Jouni Uski]], [[CCC]], August 03, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=121789 How make Fritz execute brute force search?] by [[Leonid Liberman|Leonid]], [[CCC]], July 26, 2000
* [https://www.stmintz.com/ccc/index.php?id=122370 Junior chess program. Just version of Fritz 5?] by [[Leonid Liberman|Leonid]], [[CCC]], July 29, 2000 » [[Junior]]
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=36819&p=139614#p139734 Re: Fritz protocol] by [[Odd Gunnar Malin]], [[Computer Chess Forums|Winboard Forum]], April 14, 2002 » [[Wb2UCI]]
* [https://www.stmintz.com/ccc/index.php?id=237094 Re: Something new about Fritz? English] by [[Sven Reichard]], [[CCC]], June 23, 2002
* [https://www.stmintz.com/ccc/index.php?id=237195 Re: Something new about Fritz? English, part 2] by [[Sven Reichard]], [[CCC]], June 24, 2002 » [[Eduard Nemeth]]
* [https://www.stmintz.com/ccc/index.php?id=289637 Request for link to Eduard Nemeth messages about Fritz 8.0.0.23] by [[Javier Ros Padilla]], [[CCC]], March 17, 2003 » [[Eduard Nemeth]]
* [https://www.stmintz.com/ccc/index.php?id=356131 Re: Shredder 8 secret: search depth?] by [[Vasik Rajlich]], [[CCC]], March 23, 2004 » [[Depth]], [[Shredder]], [[Junior]]
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=39244 Fritz 12] by [[Alexander Schmidt]], [[CCC]], May 31, 2011
* [http://www.talkchess.com/forum/viewtopic.php?start=0&t=40795&topic_view=threads Fritz and Naum shown as Rybka/Strelka clones] by [[Kai Laskos]], [[CCC]], October 17, 2011
* [http://www.open-chess.org/viewtopic.php?f=5&t=1679 Deep Fritz 11 eval] by [[Mark Watkins|BB+]], [[Computer Chess Forums|OpenChess Forum]], October 23, 2011
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=23488 Are Fritz and Naum Rybka/Strelka clones?] by [[Søren Riis|SR]], [[Computer Chess Forums|Rybka Forum]], November 09, 2011
* [http://www.talkchess.com/forum/viewtopic.php?t=50149 New Fritz author?] by John Hartmann, [[CCC]], November 19, 2013
: [http://www.talkchess.com/forum/viewtopic.php?t=50149&start=25 Re: New Fritz author?] by [[Albert Silver]], [[CCC]], November 20, 2013
* [http://www.talkchess.com/forum/viewtopic.php?t=50174&start=1 Re: First Impressions (Deep Fritz 14)?] by [[Albert Silver]], [[CCC]], November 22, 2013
* [http://www.talkchess.com/forum/viewtopic.php?t=50307 Allegations that Deep Fritz 14....] by [[Dr.Wael Deeb]], [[CCC]], Engine Origins, December 03, 2013
* [http://www.open-chess.org/viewtopic.php?f=5&t=2531 Fritz 11] by [[Ed Schroder|Rebel]], [[Computer Chess Forums|OpenChess Forum]], December 10, 2013 <ref>[http://www.top-5000.nl/fritz.htm Measuring similarity native ChessBase engines] by [[Ed Schroder|Ed Schröder]]</ref>
* [http://www.talkchess.com/forum/viewtopic.php?t=50291 ChessBase / Fritz interface running on Ubuntu?] by [[Norbert Raimund Leisner]], [[CCC]], December 17, 2013 » [[Linux]]
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=57071 Fritz 15 (Vas Rajlich?)] by [[Graham Banks]], [[CCC]], July 24, 2015 » [[Vasik Rajlich]]
* [http://www.talkchess.com/forum/viewtopic.php?t=58306 Fritz 15.0] by Tim Shackel, [[CCC]], November 20, 2015
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=30916 "Sampled search" ?] by albitex, [[Computer Chess Forums|Rybka Forum]], February 23, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=65706 Fritz 16] by David Shanholtzer, [[CCC]], November 12, 2017
=External Links=
==Chess Engine==
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=27 Fritz' ICGA Tournaments]
* [https://en.wikipedia.org/wiki/Fritz_%28chess%29 Fritz (chess) from Wikipedia]
* [https://en.wikipedia.org/wiki/Pocket_Fritz Pocket Fritz from Wikipedia]
* [http://www.chessgames.com/perl/chessplayer?pid=15948 The chess games of Fritz] from [http://www.chessgames.com/index.html chessgames.com]
* [http://www.top-5000.nl/cp.htm Download Chess Programs] hosted by [[Ed Schroder|Ed Schröder]] (Fritz 5.32)
* [http://correspondencechess.com/campbell/ham/ham.htm The Campbell Report - Computer CC Challenge Match]
* [http://www.top-5000.nl/fritz.htm Measuring similarity native ChessBase engines] by [[Ed Schroder|Ed Schröder]]
===Purchase===
* [http://shop.chessbase.com/en/products/fritz_16_english Fritz 16 - English Version] - [[ChessBase|ChessBase Shop]]
: [http://help.chessbase.com/Fritz/16/Eng/index.html Fritz Help]
* [https://shop.chessbase.com/en/products/fritz_15_english Fritz 15 - English Version], [[ChessBase|ChessBase Shop]]
* [http://www.chessbase-shop.com/en/products/deep_fritz_14_english Deep Fritz 14] - [[ChessBase|ChessBase Shop]]
===ChessBase News===
* [http://en.chessbase.com/post/fritz-defends-to-draw-game-8-and-the-match-final-score-4-4 Fritz Defends to Draw Game 8 and the Match! Final Score: 4-4] The Brains in Bahrain Man-Machine match is over, from [[ChessBase|ChessBase News]], October 19, 2002
* [http://en.chessbase.com/post/kasparov-vs-x3d-fritz-match-finishes-2-2-after-game-four-draw Kasparov vs X3D Fritz match finishes 2-2 after game four draw] from [[ChessBase|ChessBase News]], November 19, 2003
* [http://en.chessbase.com/post/deep-fritz-8-review-by-steve-lopez Deep Fritz 8 review] by [[Steve Lopez]], [[ChessBase|ChessBase News]], December 27, 2003
* [https://en.chessbase.com/post/mate-search-in-fritz Mate search in Fritz] by [[Steve Lopez]], [[ChessBase|ChessBase News]], August 07, 2004
* [https://en.chessbase.com/post/fritz-9-3d-boards-part-1 Fritz 9 3D boards – part 1] by [[Steve Lopez]], [[ChessBase|ChessBase News]], January 10, 2006
* [https://en.chessbase.com/post/fritz-9-3d-boards-part-2/7 Fritz 9 3D boards – part 2] by [[Steve Lopez]], [[ChessBase|ChessBase News]], January 17, 2006
* [https://en.chessbase.com/post/fritz-9-3d-boards-part-3 Fritz 9 3D boards – part 3] by [[Steve Lopez]], [[ChessBase|ChessBase News]], January 25, 2006
* [http://en.chessbase.com/post/man-vs-machine-shocker-kramnik-allows-mate-in-one Man vs machine shocker: Kramnik allows mate in one], [https://en.wikipedia.org/wiki/Bonn Bonn], November 27, 2006
* [http://en.chessbase.com/post/kramnik-vs-deep-fritz-computer-wins-match-by-4-2 Kramnik vs Deep Fritz: Computer wins match by 4:2], [[ChessBase|ChessBase News]], December 05, 2006
* [http://en.chessbase.com/post/order-now-deep-fritz-12-is-shipping Deep Fritz 12 – an interview with the author], [[ChessBase|ChessBase News]], February 17, 2010
* [http://en.chessbase.com/post/fritz-13-is-now-available-let-s-check-who-needs-it- Fritz 13 is now available – let's check who needs it!], [[ChessBase|ChessBase News]], October 13, 2011
* [http://en.chessbase.com/post/deep-fritz-13-with-blow-your-mind-functions Deep Fritz 13 with blow-your-mind functions], [[ChessBase|ChessBase News]], June 08, 2012
* [http://en.chessbase.com/post/deep-fritz-14-faster-better-cheaper Deep Fritz 14: Faster, better, cheaper], [[ChessBase|ChessBase News]], November 20, 2013
* [http://en.chessbase.com/post/deep-fritz-14-elo-3150-on-your-computer Deep Fritz 14 – Elo 3150 on your computer] by [http://www.365chess.com/players/Sean_Marsh Sean Marsh], [[ChessBase|ChessBase News]], January 28, 2014
* [http://en.chessbase.com/post/from-chess-challenger-to-deep-fritz-14 From Chess Challenger to Deep Fritz 14] by [[Ken Blake]], [[ChessBase|ChessBase News]], February 27, 2014 » [[Chess Challenger]]
* [http://en.chessbase.com/post/analyzing-your-games-with-fritz-part-one Analyzing your games with Fritz (Part one)] by [[Albert Silver]], [[ChessBase|ChessBase News]], June 02, 2014
* [http://en.chessbase.com/post/analyzing-your-games-with-fritz-part-two Analyzing your games with Fritz (Part two)] by [[Albert Silver]], [[ChessBase|ChessBase News]], June 04, 2014
* [http://en.chessbase.com/post/analyzing-your-games-with-fritz-part-three Analyzing your games with Fritz (Part three)] by [[Albert Silver]], [[ChessBase|ChessBase News]], June 07, 2014
* [http://en.chessbase.com/post/deep-fritz-14-now-with-chessbase-for-android Deep Fritz 14 now with ChessBase for Android] by [[Albert Silver]], [[ChessBase|ChessBase News]], February 23, 2015 » [[Android]]
* [http://en.chessbase.com/post/using-deep-fritz-14-on-a-smartphone Using Deep Fritz 14 on a smartphone] by [https://www.uea.ac.uk/pharmacy/people/profile/a-ganesan A. Ganesan], [[ChessBase|ChessBase News]], April 13, 2015 » [[Android]]
* [http://en.chessbase.com/post/come-and-get-it-fritz-15-released Come and get it – Fritz 15 released!], [[ChessBase|ChessBase News]], November 25, 2015
* [http://en.chessbase.com/post/fritz-15-engine-questions-and-answers Fritz 15 engine - questions and answers] by [[Albert Silver]], [[ChessBase|ChessBase News]], January 04, 2016
* [http://en.chessbase.com/post/using-your-home-chess-engine-anytime-anywhere Using your home chess engine anytime, anywhere] by [[Albert Silver]], [[ChessBase|ChessBase News]], May 09, 2017
* [http://en.chessbase.com/post/fritz-16-your-companion-and-trainer Fritz 16 – your companion and trainer], [[ChessBase|ChessBase News]], November 12, 2017
* [https://en.chessbase.com/post/fritz-16-a-fun-and-instructive-opponent Fritz 16 — a fun and instructive opponent] by [[Albert Silver]], [[ChessBase|ChessBase News]], December 11, 2017
===Rating Lists===
* [http://www.computerchess.org.uk/ccrl/4040/cgi/engine_details.cgi?match_length=30&each_game=1&print=Details&each_game=1&eng=Fritz%2015%2064-bit%204CPU#Fritz_15_64-bit_4CPU Fritz 15 64-bit 4CPU] in [[CCRL|CCRL 40/40]]
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Fritz&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Fritz family] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wikipedia.org/wiki/Fritz Fritz from Wikipedia]
* [https://en.wikipedia.org/wiki/Fritz_the_Cat Fritz the Cat from Wikipedia]
=References=
<references />
'''[[Engines|Up one Level]]'''
