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Created page with "'''Home * Engines * Mephisto * Lyon''' '''< Prev Next >''' FILE:Lyon68020.jpg|border|right|thumb|link=h..."
'''[[Main Page|Home]] * [[Engines]] * [[Mephisto]] * Lyon'''
'''[[Mephisto Portorose|< Prev]] [[Mephisto Vancouver|Next >]]'''
[[FILE:Lyon68020.jpg|border|right|thumb|link=https://www.flickr.com/photos/10261668@N05/859028734/in/album-72157600922171154/| Lyon 68020 <ref>[https://www.flickr.com/photos/10261668@N05/859028734/in/album-72157600922171154/ Lyon 68020] from [http://www.flickr.com/photos/10261668@N05/sets/72157600922171154/ Mephisto | Photo collection] by [[Steve Blincoe|Chewbanta]]</ref> ]]
'''Mephisto Lyon''',<br/>
a set of [[Dedicated Chess Computers|dedicated chess computer]] [[Module|modules]] by [[Hegener & Glaser]] for their [[Mephisto Module Systems|Mephisto module systems]] with a program by [[Richard Lang]], the successor of [[Mephisto Portorose]]. After Lang's sixth consecutive [[World Microcomputer Chess Championship]] title as member of the Mephisto team at the [[WMCCC 1990]] in [https://en.wikipedia.org/wiki/Lyon Lyon], the modules were released in late 1990. Notable was the [[WMCCC 1990#DrawbyReputation|draw by reputation]] versus runner-up [[Échec|Échec 1.9]]. Already earlier in November 1990, the Lyon had its debut at [[ACM 1990]], becoming co-champion shared with [[Deep Thought]]. It further played the [[Harvard Cup 1991]] with less success, and the [[Aegon 1991]].
=Improvements=
Improvements of the Mephisto Lyon over the Portorose were due to an enhanced [[Selectivity|selective]] [[Search|search]] with narrower but deeper [[Search Tree|search trees]], the application of [[Singular Extensions|singular extensions]], and [[Capture Extensions|capture extensions]] if entering the [[Pawn Endgame|pawn endgame]]. Further, Mephisto Lyon has more knowledge to distinguish strong versus weak [[Passed Pawn|passed pawns]], and the [[Opening Book|opening book]] was further extended to more than 100,000 moves within 13,000 variations <ref>''Mephisto Lyon 16 / 32 bit''. [http://alain.zanchetta.free.fr/docs/mephisto/MephistoLyonDE.pdf pdf] hosted by [[Alain Zanchetta]]</ref>.
=Versions=
Three Lyon versions were shipped - with [[68000]] and [[68020]] processor, and the limited edition Mephisto Lyon [https://en.wikipedia.org/wiki/Mephisto_%28chess_computer%29#Tournament_machines Tournament machines] with [[68030]] processor.
{| class="wikitable"
|-
! Processor
! MHz
! ROM (Kib)
! RAM (Kib)
|-
| 68000
| style="text-align:right;" | 12
| style="text-align:right;" | 128
| style="text-align:right;" | 512
|-
| 68020
| style="text-align:right;" | 12
| style="text-align:right;" | 128
| style="text-align:right;" | 1024
|-
| 68030 TM
| style="text-align:right;" | 36
| style="text-align:right;" | 128
| style="text-align:right;" | 2048<br/>-8192
|}
=See also=
* [[Various Classifications#Demonology|Demonology]]
* [[WMCCC 1990#DrawbyReputation|Draw by Reputation]]
* [[Mephisto Portorose]]
* [[Mephisto Vancouver]]
=Publications=
* [[Eric Hallsworth]] ('''1991'''). ''The New Mephisto Lyon''. [[Selective Search]] 32, pp 17, [http://www.chesscomputeruk.com/SS_32.pdf pdf] hosted by [[Mike Watters]]
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=461649 Collectors Corner: Mephisto Lyon 68000 v. Novag Star Diamond] by Chuck, [[CCC]], November 14, 2005 » [[Novag Star Diamond]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=4693 Master chess v.s Emulated mephisto Lyon] by Ricardo Rodulfo, [[Computer Chess Forums|Hiarcs Forum]], February 10, 2012
* [http://forum.computerschach.de/cgi-bin/mwf/topic_show.pl?tid=8487 Figurensatz Mephisto Lyon abzugeben] by [[Ingo Althöfer]], [[Computer Chess Forums|CSS Forum]], August 05, 2015 (German)
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=202 Mephisto's ICGA Tournaments] (including Lyon)
* [http://www.365chess.com/players/Comp_Mephisto_Lyon Comp Mephisto Lyon chess games - 365Chess.com]
* [http://www.chesscomputeruk.com/html/mephisto_munchen_lyon_68020.html Mephisto Munchen Lyon 68020] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]
* [http://www.chesscomputeruk.com/html/mephisto_almeria_turniermaschi.html Mephisto Almeria Turniermaschine] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]] » [[Mephisto Almeria]]
* [http://www.spacious-mind.com/html/module_lyon16_bit.html Module Lyon16 Bit] from [[The Spacious Mind]]
* [http://www.spacious-mind.com/html/module_lyon32_bit.html Module Lyon32 Bit] from [[The Spacious Mind]]
* [http://www.minet.uni-jena.de/fakultaet/iam/personen/CA-Chessd.html The 3-Hirn Setting and its Variants in Chess] by [[Ingo Althöfer]]
* [http://www.schach-computer.info/wiki/index.php/Mephisto_Lyon_68000 Mephisto Lyon 68000] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [http://www.schach-computer.info/wiki/index.php/Mephisto_Lyon_68020 Mephisto Lyon 68020] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [http://www.schach-computer.info/wiki/index.php/Mephisto_TM_Lyon Mephisto TM Lyon] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [http://www.schachcomputer.at/meplyon.htm Mephisto Lyon] from [http://www.schachcomputer.at/index.htm Kurt´s Schachcomputer Homepage] by [[Kurt Kispert]] (German)
* [http://www.utzingerk.com/vm1991/vm1991.htm Lyon 68020 Games - vm1991.pgn] by [[Kurt Utzinger]] (German)
=References=
<references />
'''[[Mephisto|Up one Level]]'''
'''[[Mephisto Portorose|< Prev]] [[Mephisto Vancouver|Next >]]'''
[[FILE:Lyon68020.jpg|border|right|thumb|link=https://www.flickr.com/photos/10261668@N05/859028734/in/album-72157600922171154/| Lyon 68020 <ref>[https://www.flickr.com/photos/10261668@N05/859028734/in/album-72157600922171154/ Lyon 68020] from [http://www.flickr.com/photos/10261668@N05/sets/72157600922171154/ Mephisto | Photo collection] by [[Steve Blincoe|Chewbanta]]</ref> ]]
'''Mephisto Lyon''',<br/>
a set of [[Dedicated Chess Computers|dedicated chess computer]] [[Module|modules]] by [[Hegener & Glaser]] for their [[Mephisto Module Systems|Mephisto module systems]] with a program by [[Richard Lang]], the successor of [[Mephisto Portorose]]. After Lang's sixth consecutive [[World Microcomputer Chess Championship]] title as member of the Mephisto team at the [[WMCCC 1990]] in [https://en.wikipedia.org/wiki/Lyon Lyon], the modules were released in late 1990. Notable was the [[WMCCC 1990#DrawbyReputation|draw by reputation]] versus runner-up [[Échec|Échec 1.9]]. Already earlier in November 1990, the Lyon had its debut at [[ACM 1990]], becoming co-champion shared with [[Deep Thought]]. It further played the [[Harvard Cup 1991]] with less success, and the [[Aegon 1991]].
=Improvements=
Improvements of the Mephisto Lyon over the Portorose were due to an enhanced [[Selectivity|selective]] [[Search|search]] with narrower but deeper [[Search Tree|search trees]], the application of [[Singular Extensions|singular extensions]], and [[Capture Extensions|capture extensions]] if entering the [[Pawn Endgame|pawn endgame]]. Further, Mephisto Lyon has more knowledge to distinguish strong versus weak [[Passed Pawn|passed pawns]], and the [[Opening Book|opening book]] was further extended to more than 100,000 moves within 13,000 variations <ref>''Mephisto Lyon 16 / 32 bit''. [http://alain.zanchetta.free.fr/docs/mephisto/MephistoLyonDE.pdf pdf] hosted by [[Alain Zanchetta]]</ref>.
=Versions=
Three Lyon versions were shipped - with [[68000]] and [[68020]] processor, and the limited edition Mephisto Lyon [https://en.wikipedia.org/wiki/Mephisto_%28chess_computer%29#Tournament_machines Tournament machines] with [[68030]] processor.
{| class="wikitable"
|-
! Processor
! MHz
! ROM (Kib)
! RAM (Kib)
|-
| 68000
| style="text-align:right;" | 12
| style="text-align:right;" | 128
| style="text-align:right;" | 512
|-
| 68020
| style="text-align:right;" | 12
| style="text-align:right;" | 128
| style="text-align:right;" | 1024
|-
| 68030 TM
| style="text-align:right;" | 36
| style="text-align:right;" | 128
| style="text-align:right;" | 2048<br/>-8192
|}
=See also=
* [[Various Classifications#Demonology|Demonology]]
* [[WMCCC 1990#DrawbyReputation|Draw by Reputation]]
* [[Mephisto Portorose]]
* [[Mephisto Vancouver]]
=Publications=
* [[Eric Hallsworth]] ('''1991'''). ''The New Mephisto Lyon''. [[Selective Search]] 32, pp 17, [http://www.chesscomputeruk.com/SS_32.pdf pdf] hosted by [[Mike Watters]]
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=461649 Collectors Corner: Mephisto Lyon 68000 v. Novag Star Diamond] by Chuck, [[CCC]], November 14, 2005 » [[Novag Star Diamond]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=4693 Master chess v.s Emulated mephisto Lyon] by Ricardo Rodulfo, [[Computer Chess Forums|Hiarcs Forum]], February 10, 2012
* [http://forum.computerschach.de/cgi-bin/mwf/topic_show.pl?tid=8487 Figurensatz Mephisto Lyon abzugeben] by [[Ingo Althöfer]], [[Computer Chess Forums|CSS Forum]], August 05, 2015 (German)
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=202 Mephisto's ICGA Tournaments] (including Lyon)
* [http://www.365chess.com/players/Comp_Mephisto_Lyon Comp Mephisto Lyon chess games - 365Chess.com]
* [http://www.chesscomputeruk.com/html/mephisto_munchen_lyon_68020.html Mephisto Munchen Lyon 68020] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]
* [http://www.chesscomputeruk.com/html/mephisto_almeria_turniermaschi.html Mephisto Almeria Turniermaschine] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]] » [[Mephisto Almeria]]
* [http://www.spacious-mind.com/html/module_lyon16_bit.html Module Lyon16 Bit] from [[The Spacious Mind]]
* [http://www.spacious-mind.com/html/module_lyon32_bit.html Module Lyon32 Bit] from [[The Spacious Mind]]
* [http://www.minet.uni-jena.de/fakultaet/iam/personen/CA-Chessd.html The 3-Hirn Setting and its Variants in Chess] by [[Ingo Althöfer]]
* [http://www.schach-computer.info/wiki/index.php/Mephisto_Lyon_68000 Mephisto Lyon 68000] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [http://www.schach-computer.info/wiki/index.php/Mephisto_Lyon_68020 Mephisto Lyon 68020] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [http://www.schach-computer.info/wiki/index.php/Mephisto_TM_Lyon Mephisto TM Lyon] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [http://www.schachcomputer.at/meplyon.htm Mephisto Lyon] from [http://www.schachcomputer.at/index.htm Kurt´s Schachcomputer Homepage] by [[Kurt Kispert]] (German)
* [http://www.utzingerk.com/vm1991/vm1991.htm Lyon 68020 Games - vm1991.pgn] by [[Kurt Utzinger]] (German)
=References=
<references />
'''[[Mephisto|Up one Level]]'''
