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=Photos=
==WMCCC 1985==[[FILE:HjoerthRathsman.jpg|none|border|text-bottom|570px640px]]
[[Lars Hjörth]], [[David Kittinger]], [[Kaare Danielsen]], [[Ulf Rathsman]], [[WMCCC 1985]] Amsterdam <ref>[[László Lindner]], A SZÁMÍTÓGÉPES SAKK KÉPEKBEN című melléklete - The pictures of the Beginning of Chess Computers</ref>
==WMCCC 1988==
[[FILE:WMCCC88YNot.jpg|none|border|text-bottom|640px]]
[[Ulf Rathsman]] and [[Sandro Necchi]] of [[Y!|Y!88]] at the [[WMCCC 1988]] in [https://en.wikipedia.org/wiki/Almer%C3%ADa Almería] <ref>Image by [[László Lindner]] from [[László Lindner]] ('''1989''').''Die wiederauferstandene Mikro-Weltmeisterschaft - 8.Mikroschachcomputer - WM 1988 in Almeria''. [https://de.wikipedia.org/wiki/Rochade_Europa Europa-Rochade], 01/02-1989, [http://schaakcomputers.nl/hein_veldhuis/database/files/11-1988,%20Europa-Rochade,%20Die%208.%20Mikroschachcomputer-WM%201988%20in%20Almeria.pdf pdf] hosted by [[Hein Veldhuis]] (German)</ref>
=Programs=
[[Princhess]] was Rathsman's first program for a [https://en.wikipedia.org/wiki/Microcomputer microcomputer], written in [[6502]] [[Assembly]] to run on a [[Commodore 64]]. In 1981, supported by [[Johan Enroth]], Rathsman became professional chess programmer for [[Dedicated Chess Computers|dedicated chess computers]]. Soon after Princhess' success as runner-up at the [[WMCCC 1981]] in [https://en.wikipedia.org/wiki/Travem%C3%BCnde Travemünde] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=466 Princhess' ICGA Tournaments]</ref>, he started collaboration with [[Peter-Ingolf Gericke]] und [[Klaus Heyne]] within their company [[Consumenta]], merchandising [[Conchess]] chess computers manufactured by ''Wallharn Electronics'', Ireland, with Rathsman's [[6502]] based Princhess program <ref>[http://www.schach-computer.info/wiki/index.php/Conchess Conchess] – [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[[Karsten Bauermeister]] ('''1998'''). ''Die Geschichte der Conchess-Schachcomputer''. [[Computerschach und Spiele]], Heft 4, August-September 1998</ref>. After Consumenta's down and out in 1983, Conchess continued under the aegis of Enroth's company, also marketed by [[Hegener & Glaser]] within two models of their [[Mephisto]] series <ref>[http://www.schach-computer.info/wiki/index.php/Mephisto_B%26P Mephisto B&P] – [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> <ref>[http://www.schach-computer.info/wiki/index.php/Mephisto_MM_II Mephisto MM II] – [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>. A Conchess computer competed at the [[WCCC 1983]] in [https://en.wikipedia.org/wiki/New_York_City New York] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=414 Conchess' ICGA Tournaments]</ref>.
Princhess became tied [[WMCCC 1984|World Microcomputer Chess Champion 1984]] in [https://en.wikipedia.org/wiki/Glasgow Glasgow], where also two Conchess computers competed with the same author involved. In collaboration with co-author [[Lars Hjörth]], Rathsman's next program was [[Plymate]] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=401 Plymate's ICGA Tournaments]</ref>, competing along with Princhess at the [[WMCCC 1985]], and further the [[WCCC 1986]], the [[WMCCC 1987]] and the [[WMCCC 1988]]. [[Y!]] (Why Not 88 and 89), also with [[Lars Hjörth]] as co-author, and [[Sandro Necchi]] as [[:Category:Opening Book AuthorsAuthor|book author]], competed the [[WMCCC 1988]] and [[WMCCC 1989]], as well the [[WCCC 1989]] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=356 Y!'s ICGA Tournaments]</ref> . Somewhere in the 90s, Ulf Rathsman retired from computer chess.
=External Links=
=References=
<references />
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[[Category:Chess Programmer|Rathsman]]
