Planner

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**Planner**,
[[Jonathan Schaeffer|Jonathan Schaeffer's]] first chess program. When Schaeffer started studying CS at the [[University of Waterloo]] in 1979, he met [[Ron Hansen]], co-author of [[Ribbit]] and [[Treefrog]], who generously gave him a copy of his program, which Schaeffer used to learn how to write a chess program. For his master's thesis, he translated the [[Fortran]] program into the Z programming language (similar to the well known [[C]] programming language), as a code base to implement own [[Knowledge|chess knowledge]] and [[Planning|long range planning]].

=Quotes=
[[Jonathan Schaeffer]] in //[[http://www.springer.com/computer/ai/book/978-0-387-76575-4|One Jump Ahead]]// <ref>[[Jonathan Schaeffer]] (**1997, 2009**). //[[http://www.springer.com/computer/ai/book/978-0-387-76575-4|One Jump Ahead]]//. 1. This Was Going to Be Easy, pp. 7</ref>:
|| {{My time at Waterloo greatly benefited from the presence of Ron Hansen. He was author of Ribbit (later called Treefrog), one of the strongest chess programs around. He generously gave me a copy of his program, which I used to learn how to write a chess program... Hansen's program was written in a computer programming language called Fortran. For my master's thesis, I translated it into the Z programming language (similar to the well known C programming language).}} ||

|| {{Everything I read about chess programs convinced me that they were ignorant; they had little in the way of chess knowledge. Of course, since I knew a lot about chess, it would be a simple matter of translating my expertise into code and voilà, success! I spent a year working on the program, adding as much knowledge as I could to it. The new program, dubbed Planner, failed to live up to my performance expectations. Gradually my enthusiasm began to wave. The chess knowledge that I had added was simple because important concepts seemed hard to program. The machine required a precise specification but my chess knowledge was imprecise. Further, for every piece of knowledge  that I added, there always seemed to be an endless stream of exceptions. This was going to be harder  than I thought.}}

{{I finished my master's thesis, titled //Long Range Planning in Computer Chess//, and graduated in 1980.}} <ref>[[Jonathan Schaeffer]] (**1980**). //Long-Range Planning in Computer Chess//. Master's thesis, Department of Computer Science, [[University of Waterloo]]</ref> ||

=See also=
* [[Paradise]]
* [[Planning]]
* [[Prodigy]]
* [[Phoenix]]

=References=
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=What links here?=
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