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the mighty chess program from [https://en.wikipedia.org/wiki/Denmark Denmark] developed by [[Steen Suurballe]] and [[:Category:Opening Book Author‏‎|opening book author]] [[Dan Wulff]]. Initially developed as [[MS-DOS]] program with its own [[GUI]], it was market by [[Gambit-Soft]] <ref>[http://web.archive.org/web/20011224050215/http://gambitsoft.com/schach/spiele/gandalf.htm Gandalf], Copyright © 1996, [[Gambit-Soft]] (German), hosted by the [https://en.wikipedia.org/wiki/Internet_Archive Internet Archive] (German)</ref>, the [[Chess Engine Communication Protocol|WinBoard]] compliant Gandalf '''4.32''' was further shipped by Gambit-Soft <ref> [http://scleinzell.schachvereine.de/p_spielprogramme/gandalf432f.shtml Gandalf 4.32f] by [[Peter Schreiner]], November 2000, hosted by [http://scleinzell.schachvereine.de/home/news.shtml Schachclub Leinzell] (German)</ref>, Gandalf '''5''' by [[Ed Schroder|Schröder BV]] <ref>[http://www.rebel.nl/gandalf.htm Gandalf Main Page]</ref>, and Gandalf '''6''' by [[Lokasoft]] as native [[ChessPartner]] as well as [[UCI]]/[[Chess Engine Communication Protocol|WinboardWinBoard]] engines <ref>[http://www.lokasoft.nl/gandalf6.aspx Gandalf 6 - Lokasoft - Home of ChessPartner]</ref>. The most recent [[UCI]] compliant Gandalf '''7''' is freely available from [[Frank Quisinsky|Frank Quisinsky's]] download site <ref>[http://www.amateurschach.de/ Frank's Chess Page] follow Downloads</ref>, courtesy Steen Suurballe <ref>[http://www.talkchess.com/forum/viewtopic.php?t=63814 I got the permission by Steen Surrballe (Gandalf) ...] by [[Frank Quisinsky]], [[CCC]], April 25, 2017</ref>.