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Created page with "'''Home * Engines * LogiChess''' '''LogiChess''', <br/> the first chess program by Kaare Danielsen developed in 1981 for an Intel [https://en.wikipe..."
'''[[Main Page|Home]] * [[Engines]] * LogiChess'''
'''LogiChess''', <br/>
the first chess program by [[Kaare Danielsen]] developed in 1981 for an [[Intel]] [https://en.wikipedia.org/wiki/Intel_MCS-48 8048] compatible 80C50 [https://en.wikipedia.org/wiki/CMOS CMOS] [https://en.wikipedia.org/wiki/Microcontroller microcontroller] with 4 K Kibi internal [[Memory#ROM|EPROM]] and only 256 byte internal [[Memory#RAM|RAM]], and a [https://en.wikipedia.org/wiki/Clock_rate clock frequency] of 3.6 resp. 7.2 MHz. It competed at the [[European MCC 1981|2nd European MCC 1981]] (3rd place) <ref>Logichess by the 17-year-old Danish schoolboy [[Kaare Danielsen]] was 3rd, from
[http://www.chesscomputeruk.com/html/chess_computers_-_the_uk_story.html Chess Computers - The UK Story] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]</ref> and two [[World Microcomputer Chess Championship|World Microcomputer Chess Championships]] in [[WMCCC 1981|1981]] and [[WMCCC 1983|1983]], at times supported by [[Hartvig Ekner]] <ref>[[Frederic Friedel]] ('''1984'''). ''Move from the East''. Report of the WMCCC 1983, [[Personal Computer World]], January 1984</ref>.
=SciSys & CXG=
As [[Dedicated Chess Computers|dedicated chess computer]], LogiChess was sold in approximately 200.000 units <ref>[http://www.danielsen.com/resume.shtml Resume for Kaare Danielsen]</ref> from [[Saitek|SciSys]] as [[SciSys Explorer]], [[SciSys Explorer#Concord|SciSys Concord II]] and [[SciSys Explorer#Companion|SciSys Companion II]], and from [https://en.wikipedia.org/wiki/RadioShack RadioShack] as ''Tandy 1650'' <ref>[http://www.schach-computer.info/wiki/index.php/Tandy_1650 Tandy 1650] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>. Another 4K branch was realized for [[Newcrest Technology]], for the [[6800]] instruction set compatible [https://en.wikipedia.org/wiki/Hitachi_Ltd. Hitachi] [[6800#6301|HD6301V1]] 8-bit controller for the [[CXG Sensor Computachess#III|CXG Computachess III]] in 1984 <ref>[http://www.schach-computer.info/wiki/index.php/CXG_Computachess_III CXG Computachess III] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, as well the Newcrest 6301V <ref>[http://www.schach-computer.info/wiki/index.php/6301V 6301V] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> inside the [[CXG Star Chess]] of 1985 <ref>[http://www.schach-computer.info/wiki/index.php/CXG_Star_Chess CXG Star Chess] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> <ref>[http://www.schach-computer.info/wiki/index.php/Danielsen,_Kaare Danielsen, Kaare] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>. According to its author, LogiChess is still the strongest 4K chess computer in the world <ref>[http://www.danielsen.com/resume.shtml Resume for Kaare Danielsen]</ref>.
=Lexibook=
The [[Motorola]] [[6800]] LogiChess branch was still in production in the 2000s, as used in all the '''Lexibook''' computers <ref>[http://www.spacious-mind.com/html/lexibook.html Lexibook Electronic Chess Computers] from [[The Spacious Mind]]</ref> with [https://en.wikipedia.org/wiki/Freescale_68HC08 68HC08] compatible microcontrollers <ref>[http://www.schach-computer.info/wiki/index.php/Danielsen,_Kaare Danielsen, Kaare] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> <ref>[http://www.spacious-mind.com/html/travel_chess_explorer.html Lexibook Travel Chess Explorer Electronic Chess Computer] from [[The Spacious Mind]]</ref> <ref>[http://www.spacious-mind.com/html/chessman_pro.html Lexibook ChessMan Pro Electronic Chess Computer] from [[The Spacious Mind]]</ref> <ref>[http://www.schach-computer.info/wiki/index.php/Lexibook_Travel_Chess Lexibook Travel Chess] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>.
=Selected Games=
<span id="CyrusLogiChess1983"></span>[[WMCCC 1983]], round 1, [[Cyrus 68K|65 Cyrus X]] - [[LogiChess|LogiChess 2.2]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=66&round=1&id=2 Budapest 1983 - Chess - Round 1 - Game 2 (ICGA Tournaments)]</ref>
<pre>
[Event "WMCCC 1983"]
[Site "Budapest, Hungary"]
[Date "1983.10.13"]
[Round "1"]
[White "65 Cyrus X"]
[Black "LogiChess 2.2"]
[Result "0-1"]
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.e3 Nc6 5.Be2 Ne4 6.Nxe4 dxe4 7.c5 Qg5 8.g3 Qf5
9.Bg4 Qd5 10.Bd2 h5 11.Be2 e5 12.Bc3 h4 13.Bb5 hxg3 14.Bxc6+ Qxc6 15.fxg3 Be6
16.h4 b6 17.cxb6 axb6 18.a4 exd4 19.Qxd4 f6 20.Qd1 Bc5 21.Ne2 Bxe3 22.Nd4 Qd6
23.Ne2 Qxd1+ 24.Kxd1 Rxa4 25.Kc2 b5 26.Rxa4 bxa4 27.Bd4 Bh6 28.Nc3 Bb3+ 29.Kb1
f5 30.g4 fxg4 31.Nxe4 O-O 32.Re1 Rf3 33.Ng5 Bxg5 34.hxg5 Rd3 35.g6 Rd1+ 36.Rxd1
Bxd1 37.Kc1 Bf3 38.Kd2 Be4 39.Ke3 Bxg6 40.Be5 c5 41.Kf4 Bh5 42.Kg5 g6 43.Kf6 c4
44.Ke6 c3 45.bxc3 a3 46.c4 a2 47.c5 g3 48.c6 g2 49.Bd4 g1=Q 50.Bxg1 a1=Q 51.Bc5
Bg4+ 52.Kd6 Bf3 53.Bf2 Qd1+ 54.Kc7 Qc1 55.Bg3 Qxc6+ 56.Kd8 Bg4 57.Ke7 Qe6+
58.Kd8 Qd7# 0-1
</pre>
=See also=
* [[CXG Sensor Computachess#III|CXG Computachess III]]
* [[CXG Star Chess]]
* [[Enterprise]]
* [[SciSys Explorer]]
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=468 LogiChess' ICGA Tournaments]
* [http://www.danielsen.com/resume.shtml Resume for Kaare Danielsen]
=References=
<references />
'''[[Engines|Up one level]]'''
'''LogiChess''', <br/>
the first chess program by [[Kaare Danielsen]] developed in 1981 for an [[Intel]] [https://en.wikipedia.org/wiki/Intel_MCS-48 8048] compatible 80C50 [https://en.wikipedia.org/wiki/CMOS CMOS] [https://en.wikipedia.org/wiki/Microcontroller microcontroller] with 4 K Kibi internal [[Memory#ROM|EPROM]] and only 256 byte internal [[Memory#RAM|RAM]], and a [https://en.wikipedia.org/wiki/Clock_rate clock frequency] of 3.6 resp. 7.2 MHz. It competed at the [[European MCC 1981|2nd European MCC 1981]] (3rd place) <ref>Logichess by the 17-year-old Danish schoolboy [[Kaare Danielsen]] was 3rd, from
[http://www.chesscomputeruk.com/html/chess_computers_-_the_uk_story.html Chess Computers - The UK Story] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]</ref> and two [[World Microcomputer Chess Championship|World Microcomputer Chess Championships]] in [[WMCCC 1981|1981]] and [[WMCCC 1983|1983]], at times supported by [[Hartvig Ekner]] <ref>[[Frederic Friedel]] ('''1984'''). ''Move from the East''. Report of the WMCCC 1983, [[Personal Computer World]], January 1984</ref>.
=SciSys & CXG=
As [[Dedicated Chess Computers|dedicated chess computer]], LogiChess was sold in approximately 200.000 units <ref>[http://www.danielsen.com/resume.shtml Resume for Kaare Danielsen]</ref> from [[Saitek|SciSys]] as [[SciSys Explorer]], [[SciSys Explorer#Concord|SciSys Concord II]] and [[SciSys Explorer#Companion|SciSys Companion II]], and from [https://en.wikipedia.org/wiki/RadioShack RadioShack] as ''Tandy 1650'' <ref>[http://www.schach-computer.info/wiki/index.php/Tandy_1650 Tandy 1650] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>. Another 4K branch was realized for [[Newcrest Technology]], for the [[6800]] instruction set compatible [https://en.wikipedia.org/wiki/Hitachi_Ltd. Hitachi] [[6800#6301|HD6301V1]] 8-bit controller for the [[CXG Sensor Computachess#III|CXG Computachess III]] in 1984 <ref>[http://www.schach-computer.info/wiki/index.php/CXG_Computachess_III CXG Computachess III] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, as well the Newcrest 6301V <ref>[http://www.schach-computer.info/wiki/index.php/6301V 6301V] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> inside the [[CXG Star Chess]] of 1985 <ref>[http://www.schach-computer.info/wiki/index.php/CXG_Star_Chess CXG Star Chess] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> <ref>[http://www.schach-computer.info/wiki/index.php/Danielsen,_Kaare Danielsen, Kaare] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>. According to its author, LogiChess is still the strongest 4K chess computer in the world <ref>[http://www.danielsen.com/resume.shtml Resume for Kaare Danielsen]</ref>.
=Lexibook=
The [[Motorola]] [[6800]] LogiChess branch was still in production in the 2000s, as used in all the '''Lexibook''' computers <ref>[http://www.spacious-mind.com/html/lexibook.html Lexibook Electronic Chess Computers] from [[The Spacious Mind]]</ref> with [https://en.wikipedia.org/wiki/Freescale_68HC08 68HC08] compatible microcontrollers <ref>[http://www.schach-computer.info/wiki/index.php/Danielsen,_Kaare Danielsen, Kaare] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> <ref>[http://www.spacious-mind.com/html/travel_chess_explorer.html Lexibook Travel Chess Explorer Electronic Chess Computer] from [[The Spacious Mind]]</ref> <ref>[http://www.spacious-mind.com/html/chessman_pro.html Lexibook ChessMan Pro Electronic Chess Computer] from [[The Spacious Mind]]</ref> <ref>[http://www.schach-computer.info/wiki/index.php/Lexibook_Travel_Chess Lexibook Travel Chess] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>.
=Selected Games=
<span id="CyrusLogiChess1983"></span>[[WMCCC 1983]], round 1, [[Cyrus 68K|65 Cyrus X]] - [[LogiChess|LogiChess 2.2]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=66&round=1&id=2 Budapest 1983 - Chess - Round 1 - Game 2 (ICGA Tournaments)]</ref>
<pre>
[Event "WMCCC 1983"]
[Site "Budapest, Hungary"]
[Date "1983.10.13"]
[Round "1"]
[White "65 Cyrus X"]
[Black "LogiChess 2.2"]
[Result "0-1"]
1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.e3 Nc6 5.Be2 Ne4 6.Nxe4 dxe4 7.c5 Qg5 8.g3 Qf5
9.Bg4 Qd5 10.Bd2 h5 11.Be2 e5 12.Bc3 h4 13.Bb5 hxg3 14.Bxc6+ Qxc6 15.fxg3 Be6
16.h4 b6 17.cxb6 axb6 18.a4 exd4 19.Qxd4 f6 20.Qd1 Bc5 21.Ne2 Bxe3 22.Nd4 Qd6
23.Ne2 Qxd1+ 24.Kxd1 Rxa4 25.Kc2 b5 26.Rxa4 bxa4 27.Bd4 Bh6 28.Nc3 Bb3+ 29.Kb1
f5 30.g4 fxg4 31.Nxe4 O-O 32.Re1 Rf3 33.Ng5 Bxg5 34.hxg5 Rd3 35.g6 Rd1+ 36.Rxd1
Bxd1 37.Kc1 Bf3 38.Kd2 Be4 39.Ke3 Bxg6 40.Be5 c5 41.Kf4 Bh5 42.Kg5 g6 43.Kf6 c4
44.Ke6 c3 45.bxc3 a3 46.c4 a2 47.c5 g3 48.c6 g2 49.Bd4 g1=Q 50.Bxg1 a1=Q 51.Bc5
Bg4+ 52.Kd6 Bf3 53.Bf2 Qd1+ 54.Kc7 Qc1 55.Bg3 Qxc6+ 56.Kd8 Bg4 57.Ke7 Qe6+
58.Kd8 Qd7# 0-1
</pre>
=See also=
* [[CXG Sensor Computachess#III|CXG Computachess III]]
* [[CXG Star Chess]]
* [[Enterprise]]
* [[SciSys Explorer]]
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=468 LogiChess' ICGA Tournaments]
* [http://www.danielsen.com/resume.shtml Resume for Kaare Danielsen]
=References=
<references />
'''[[Engines|Up one level]]'''
