Richard Greenblatt

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Richard D. Greenblatt, an American computer programmer, along with Bill Gosper considered the co-founder of the hacker community. At MIT, working for the Project MAC (Machine-Aided Cognition), he was the main implementor of Maclisp on the PDP-6 and co-developer of the ITS (Incompatible Timesharing System), the operating system on which MacLisp was developed.

Richard Greenblatt was primary author of Mac Hack (The Greenblatt Chess Program) in 1966 and 1967, and along with Tom Knight main designer of the MIT Lisp machine. In 1978 Mac Hack got adapted to the Chess-orientated Processing System CHEOPS, one of the first dedicated hardware approaches in computer chess.

In 1979, Greenblatt founded Lisp Machines, Inc. to build and sell Lisp machines, competing with Symbolics, a company founded by his former MIT AI Lab fellows around Russell Noftsker, Tom Knight and Jack Holloway. Lisp Machines, Inc. went bankrupt in 1987.

=Photos= Tom Knight and Richard Greenblatt (right)

=Selected Publications=
 * Richard Greenblatt, Donald Eastlake, Stephen D. Crocker (1967). The Greenblatt Chess Program. Proceedings of the AfiPs Fall Joint Computer Conference, Vol. 31, reprinted (1988) in Computer Chess Compendium, pdf from The Computer History Museum or as pdf or ps from DSpace at MIT
 * Donald Eastlake, Richard Greenblatt, Jack Holloway, Tom Knight, Stuart Nelson (1969). ITS 1.5 Reference Manual.
 * Hans Berliner, Richard Greenblatt, Jacques Pitrat, Arthur Samuel, David Slate (1977). Panel on Computer Game Playing. IJCAI 1977, pdf
 * Alan Bawden, Richard Greenblatt, Jack Holloway, Tom Knight, David Moon, Daniel Weinreb (1977). Lisp Machine Progress Report. AI memo 444
 * John Moussouris, Jack Holloway, Richard Greenblatt (1979). CHEOPS: A Chess-orientated Processing System. Machine Intelligence 9, reprinted (1988) in Computer Chess Compendium
 * Richard Greenblatt (1992). Wedgitude. ICCA Journal, Vol. 15, No. 4 » WCCC 1992 Workshop
 * Jaap van den Herik (1992). An Interview with Richard D. Greenblatt. ICCA Journal, Vol. 15, No. 4, pdf

=External Links=
 * Richard Greenblatt from Wikipedia
 * Oral History of Richard Greenblatt Video from The Computer History Museum
 * Oral History of Richard Greenblatt (pdf) from The Computer History Museum
 * History of LISP from The Software Preservation Group of The Computer History Museum
 * Opening Moves: Origins of Computer Chess, Getting Going from The Computer History Museum
 * Transcript of Richard Stallman's Speech, 28 Oct 2002, at the International Lisp Conference

=References=

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