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'''[[Main Page|Home]] * [[Engines]] * RexChess'''
'''RexChess''',<br/>
a commercial chess program by [[Don Dailey]] and [[Larry Kaufman]]. The engine was written in [[8086]] [[Assembly|assembly language]], the [[GUI|graphical user interface]] written in [[Pascal#TurboPascal|Turbo Pascal]] <ref>[https://www.schach-welt.de/schach/computerschach/interviews/don-dailey Interview with Don Dailey] by [[Frank Quisinsky]], December 18-20, 2009</ref> . RexChess was the commercial successor of [[Rex]], running on [[IBM PC]] and compatibles under [[MS-DOS]]. RexChess played the [[Aegon 1991]] with 3½ out of 6, losing from [[David Bronstein]], winning versus [https://en.wikipedia.org/wiki/Tim_Krabb%C3%A9 Tim Krabbé] and drawing from [https://en.wikipedia.org/wiki/Jeroen_Piket Jeroen Piket], [[Harvard Cup 1991]], and [[Aegon 1992]].
=Screenshot=
[[FILE:rex230.gif|none|border|text-bottom|640px|link=http://www.multiweb.cz/max.rubin/rex230.htm]]
Rexchess 2.30 Dos Screen <ref>[http://www.multiweb.cz/max.rubin/rex230.htm Rexchess 2.30]</ref>
=Quote=
by [[Larry Kaufman]] from ''The Rexchess Story'' <ref>[[Larry Kaufman]] ('''1990'''). ''The Rexchess Story''. [[Computer Chess Reports|Computer Chess Reports Quarterly]]. Vol. 1, No. 1, pp. 8, [http://www.chesscomputeruk.com/html/computer_chess_reports.html Chess Computer UK] by [[Mike Watters]]</ref>:
The next step forward came when [[Novag|Novag's]] [[David Kittinger|Dave Kittinger]], Don and I jointly worked out how to do an effective [[Selectivity|selective]] [[Search|search]] program. Dave put these ideas into the [[Novag Expert|Super Expert B]] and [[Novag Forte|Super Forte B]], while Don and I put them into Rex. So we decided to enter the [[WCCC 1989|1989 World Computer Championship]] in Edmonton, although the program was very incomplete and not fully debugged. We scored 2 out of 5, around the middle of the PC programs, although our 20 MHz [[x86|368]] was one of the slower machines present. Soon thereafter, Don quit his job to devote 2 months full-time to completing Rex and adding features necessary for a commercial program.
=See also=
* [[Rex]]
* [[Heuristic Alpha]]
* [[Various Classifications#Reptile|Reptile]]
* [[Socrates]]
=Publications=
* [[Larry Kaufman]] ('''1990'''). ''The Rexchess Story''. [[Computer Chess Reports|Computer Chess Reports Quarterly]]. Vol. 1, No. 1, pp. 8
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=340973 Rexchess] by [[José Carlos Martínez Galán|José Carlos]], [[CCC]], January 08, 2004
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=2525 RexChess 230 Rybka Danger?] by Mark, [[Computer Chess Forums|Rybka Forum]], October 31, 2007
* [http://www.foro.meca-web.es/viewtopic.php?f=9&t=72&start=30#p3105 La Máquina Preservadora 4. Don Dailey & Larry Kaufman] by Luis a, [[Computer Chess Forums|Meca Foro]], October 18, 2013
=External Links=
* [http://www.top-5000.nl/cp.htm Download Chess Programs] hosted by [[Ed Schroder|Ed Schröder]]
* [http://www.multiweb.cz/max.rubin/rex230.htm Rexchess 2.30]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:DosEngine]]
'''RexChess''',<br/>
a commercial chess program by [[Don Dailey]] and [[Larry Kaufman]]. The engine was written in [[8086]] [[Assembly|assembly language]], the [[GUI|graphical user interface]] written in [[Pascal#TurboPascal|Turbo Pascal]] <ref>[https://www.schach-welt.de/schach/computerschach/interviews/don-dailey Interview with Don Dailey] by [[Frank Quisinsky]], December 18-20, 2009</ref> . RexChess was the commercial successor of [[Rex]], running on [[IBM PC]] and compatibles under [[MS-DOS]]. RexChess played the [[Aegon 1991]] with 3½ out of 6, losing from [[David Bronstein]], winning versus [https://en.wikipedia.org/wiki/Tim_Krabb%C3%A9 Tim Krabbé] and drawing from [https://en.wikipedia.org/wiki/Jeroen_Piket Jeroen Piket], [[Harvard Cup 1991]], and [[Aegon 1992]].
=Screenshot=
[[FILE:rex230.gif|none|border|text-bottom|640px|link=http://www.multiweb.cz/max.rubin/rex230.htm]]
Rexchess 2.30 Dos Screen <ref>[http://www.multiweb.cz/max.rubin/rex230.htm Rexchess 2.30]</ref>
=Quote=
by [[Larry Kaufman]] from ''The Rexchess Story'' <ref>[[Larry Kaufman]] ('''1990'''). ''The Rexchess Story''. [[Computer Chess Reports|Computer Chess Reports Quarterly]]. Vol. 1, No. 1, pp. 8, [http://www.chesscomputeruk.com/html/computer_chess_reports.html Chess Computer UK] by [[Mike Watters]]</ref>:
The next step forward came when [[Novag|Novag's]] [[David Kittinger|Dave Kittinger]], Don and I jointly worked out how to do an effective [[Selectivity|selective]] [[Search|search]] program. Dave put these ideas into the [[Novag Expert|Super Expert B]] and [[Novag Forte|Super Forte B]], while Don and I put them into Rex. So we decided to enter the [[WCCC 1989|1989 World Computer Championship]] in Edmonton, although the program was very incomplete and not fully debugged. We scored 2 out of 5, around the middle of the PC programs, although our 20 MHz [[x86|368]] was one of the slower machines present. Soon thereafter, Don quit his job to devote 2 months full-time to completing Rex and adding features necessary for a commercial program.
=See also=
* [[Rex]]
* [[Heuristic Alpha]]
* [[Various Classifications#Reptile|Reptile]]
* [[Socrates]]
=Publications=
* [[Larry Kaufman]] ('''1990'''). ''The Rexchess Story''. [[Computer Chess Reports|Computer Chess Reports Quarterly]]. Vol. 1, No. 1, pp. 8
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=340973 Rexchess] by [[José Carlos Martínez Galán|José Carlos]], [[CCC]], January 08, 2004
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=2525 RexChess 230 Rybka Danger?] by Mark, [[Computer Chess Forums|Rybka Forum]], October 31, 2007
* [http://www.foro.meca-web.es/viewtopic.php?f=9&t=72&start=30#p3105 La Máquina Preservadora 4. Don Dailey & Larry Kaufman] by Luis a, [[Computer Chess Forums|Meca Foro]], October 18, 2013
=External Links=
* [http://www.top-5000.nl/cp.htm Download Chess Programs] hosted by [[Ed Schroder|Ed Schröder]]
* [http://www.multiweb.cz/max.rubin/rex230.htm Rexchess 2.30]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[Category:DosEngine]]
