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=Program Characteristics=
<ref>[http://www.ajedrez-de-estilo.com.ar/int/Products/engines/doctor/index.htm Doctor? by Dr. Hans-Joachim Kraas and Dr. Gunther Schrüfer] (as of June 2018, dead link)</ref>
* [[STC-Search]] (solution tree cost oriented search) <ref>[[Günther Schrüfer]] ('''1988'''). ''[http://www.worldcat.org/oclc/246856479&referer=brief_results Minimax-Suchen : Kosten, Qualität und Algorithmen]''. Braunschweig [https: Technische Universität//en. wikipedia.org/wiki/Technical_University_of_Braunschweig Technical University of Braunschweig] (German)</ref>
* Ample chess [[Knowledge|knowledge]] in [[Evaluation Function|evaluation function]] and [[Search|search]] heuristics.
* [[Strategy|Positional]] playing style with [[Tactics|tactical]] surprises.
* Written fully in [[C]]
* Implemented on [[Atari ST]], [[IBM PC|PC]] ([[Unix]], [[Windows|Win3.x, Win95/98, WinNT]]), [[Macintosh|Mac]], [[Sun]], BiiN
=External Links=
==Chess Program==
* [https://www.schachversand.de/de/doctor-2-0-engine-macintosh.html Doctor? 2.0 / Engine MacIntosh - Schachprogramm - Software] - [[Schachversand Niggemann]]
* [http://computerchess.org.uk/ccrl/404/cgi/engine_details.cgi?print=Details&each_game=1&eng=Doctor%203.0#Doctor_3_0 Doctor 3.0] in [[CCRL|CCRL 40/4]]
==Misc==
* [https://en.wikipedia.org/wiki/Doctor_Who Doctor Who from Wikipedia]
* [http://tardis.wikia.com/wiki/Douglas_Adams Douglas Adams | Tardis, The Doctor Who Wiki]
=Refererences=
<references />
'''[[Engines|Up one Level]]'''
[[Category:Douglas Adams]]
