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a [[Dedicated Chess Computers|dedicated chess computer]] [[Module|module]] for [[Mephisto Module Systems|Mephisto module systems]] by [[Hegener & Glaser]] launched in 1987 as successor of [[Mephisto Rebell]]. [[Ed Schroder|Ed Schröder's]] program run on a [[6502|65C02]] [https://en.wikipedia.org/wiki/CMOS CMOS] processor. The MM IV played the [[First International Chess-Computer Tournament in the USSR 1989]], and was runner-up, only losing from its stable mate [[Mephisto Almeria]] with a [[Richard Lang|Lang]] program and a much more powerful [[68020]] 32-bit processor <ref>[http://www.schach-computer.info/wiki/index.php/Mephisto_Almeria_68020 Mephisto Almeria 68020] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>.
However, in 1988 the '''MM IV Turbo Kit''' with the discrete [[6502#TK20|TK 20]] processor by ''Schaetzle+Bsteh'' took the lead in the [[SSDF]] rating list <ref>[https://en.wikipedia.org/wiki/Swedish_Chess_Computer_Association#Rating_list_year-end_leaders Swedish Chess Computer Association - Leaders year by year from Wikipedia]</ref>,
threatening H&G's marketing strategy of high end market with superior hardware and Lang programs versus middle class market and low end market with average and limited hardware with Schröder and [[Frans Morsch|Morsch]] programs <ref>[http://rebel13.nl/dedicated/mm4.html MM IV] from [http://rebel13.nl/index.html Rebel Pure Nostalgica] by [[Ed Schroder|Ed Schröder]]</ref> <ref>[http://chesseval.com/ChessEvalJournal/PrototypeMMV.htm The MM-V Machine at the World Championschip, Portorose, 1989] by [[Hans van Mierlo]], [http://www.chesseval.com/index.html ChessEval], February 09, 2014 » [[WMCCC 1989]]</ref>.
=See also=
