Difference between revisions of "Ulf Rathsman"

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'''Ulf Rathsman''',<br/>
 
'''Ulf Rathsman''',<br/>
 
a Swedish engineer and former professional computer chess programmer. He started chess programming in the 70s, and his first program [[Dark Horse]], written in [[Fortran]] and running on a [[CDC 6600]]  [https://en.wikipedia.org/wiki/Mainframe_computer mainframe computer] <ref>[[Peter Jennings]] ('''1978'''). ''Microchess 1.5 Versus Dark Horse''. [[Byte Magazine#BYTE303|BYTE, Vol. 3, No. 3]]</ref> and also on a 36-bit one's complement [[UNIVAC 1100]] <ref>[https://www.game-ai-forum.org/icga-tournaments/tournament.php?id=68 3rd World Computer Chess Championship - Linz 1980 (ICGA Tournaments)]</ref>, played the [[WCCC 1977]] in [https://en.wikipedia.org/wiki/Toronto Toronto], the [[WCCC 1980]] in [https://en.wikipedia.org/wiki/Linz Linz] respectively <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=426 Dark Horse' ICGA Tournaments]</ref>, and was runner-up at the [[ECCC 1979]].  
 
a Swedish engineer and former professional computer chess programmer. He started chess programming in the 70s, and his first program [[Dark Horse]], written in [[Fortran]] and running on a [[CDC 6600]]  [https://en.wikipedia.org/wiki/Mainframe_computer mainframe computer] <ref>[[Peter Jennings]] ('''1978'''). ''Microchess 1.5 Versus Dark Horse''. [[Byte Magazine#BYTE303|BYTE, Vol. 3, No. 3]]</ref> and also on a 36-bit one's complement [[UNIVAC 1100]] <ref>[https://www.game-ai-forum.org/icga-tournaments/tournament.php?id=68 3rd World Computer Chess Championship - Linz 1980 (ICGA Tournaments)]</ref>, played the [[WCCC 1977]] in [https://en.wikipedia.org/wiki/Toronto Toronto], the [[WCCC 1980]] in [https://en.wikipedia.org/wiki/Linz Linz] respectively <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=426 Dark Horse' ICGA Tournaments]</ref>, and was runner-up at the [[ECCC 1979]].  
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=Photos=
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[[FILE:HjoerthRathsman.jpg|none|border|text-bottom|570px]]
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[[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>
  
 
=Programs=  
 
=Programs=  

Revision as of 18:35, 14 June 2018

Home * People * Ulf Rathsman

Ulf Rathsman [1]

Ulf Rathsman,
a Swedish engineer and former professional computer chess programmer. He started chess programming in the 70s, and his first program Dark Horse, written in Fortran and running on a CDC 6600 mainframe computer [2] and also on a 36-bit one's complement UNIVAC 1100 [3], played the WCCC 1977 in Toronto, the WCCC 1980 in Linz respectively [4], and was runner-up at the ECCC 1979.

Photos

HjoerthRathsman.jpg

Lars Hjörth, David Kittinger, Kaare Danielsen, Ulf Rathsman, WMCCC 1985 Amsterdam [5]

Programs

in chronological order

Dedicated Computers

Career

Princhess was Rathsman's first program for a 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. Soon after Princhess' success as runner-up at the WMCCC 1981 in Travemünde [6], 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 [7] [8]. 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 [9] [10]. A Conchess computer competed at the WCCC 1983 in New York [11].

Princhess became tied World Microcomputer Chess Champion 1984 in 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 [12], 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 book author, competed the WMCCC 1988 and WMCCC 1989, as well the WCCC 1989 [13] . Somewhere in the 90s, Ulf Rathsman retired from computer chess.

External Links

References

  1. Image cropped from Tidskrift för Schack utges av Sveriges Schackförbund, No. 9, November, 1982, pg. 285, Den "svensktillverkade" schackdatorn Conchess konstruktörer, Ulf Rathsman och Johan Enroth, pdf
  2. Peter Jennings (1978). Microchess 1.5 Versus Dark Horse. BYTE, Vol. 3, No. 3
  3. 3rd World Computer Chess Championship - Linz 1980 (ICGA Tournaments)
  4. Dark Horse' ICGA Tournaments
  5. László Lindner, A SZÁMÍTÓGÉPES SAKK KÉPEKBEN című melléklete - The pictures of the Beginning of Chess Computers
  6. Princhess' ICGA Tournaments
  7. ConchessSchachcomputer.info Wiki (German)
  8. Karsten Bauermeister (1998). Die Geschichte der Conchess-Schachcomputer. Computerschach und Spiele, Heft 4, August-September 1998
  9. Mephisto B&PSchachcomputer.info Wiki
  10. Mephisto MM IISchachcomputer.info Wiki
  11. Conchess' ICGA Tournaments
  12. Plymate's ICGA Tournaments
  13. Y!'s ICGA Tournaments

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