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The [[ARM2]] [https://en.wikipedia.org/wiki/Reduced_instruction_set_computing RISC] version of Rebel, developed in the early 90s, running on a [[TASC]] [https://en.wikipedia.org/wiki/ISA_bus ISA card] for an [[IBM PC]], and called [[ChessMachine]] [[Gideon]], won the [[WMCCC 1991]] in [https://en.wikipedia.org/wiki/Vancouver Vancouver] and the [[WCCC 1992]] in [https://en.wikipedia.org/wiki/Madrid Madrid] <ref>[http://members.home.nl/matador/chess_2.htm World Champion (1991-1995)]</ref> . Subsequent [[x86]] PC-versions of Rebel run under [[MS-DOS]] with its own proprietary but sophisticated [[GUI|graphical user interface]] developed by [[Rob Kemper]], while [[Jeroen Noomen]] was responsible for the [[Opening Book|opening book]] <ref>[http://members.home.nl/matador/chess_3.htm REBEL on the PC (1993-2001)]</ref> .
<span id="ProgrammersCornerProgrammerCorner"></span>
=How Rebel plays Chess=
When [[Ed Schroder|Ed Schröder]] retired from competition in 2003, he made almost all his knowledge about the internals of Rebel public in his ''Programmer's Corner'' summarized in ''How Rebel Plays Chess'' <ref>[[Ed Schroder|Ed Schröder]] ('''2004'''). ''How Rebel Plays Chess''. [http://members.home.nl/matador/Inside%20Rebel.pdf pdf]</ref>, elaborating on:
* [[Move Ordering]]
* [[Search|Search Techniques]]
