J.+Biit

Hans Berliner's first chess program, written in the late 60s in PL/I to ran on an IBM System/360 [|mainframe computer]. It played the First United States Computer Chess Championship 1970 in [|New York City], and won versus Wita, lost from Chess 3.0 and drew Coko III.
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 * [[image:Everest_kalapatthar_crop.jpg link="https://en.wikipedia.org/wiki/Mount_Everest"]] ||~  || **J. Biit**,

Along with Daly CP, J. Biit was one of the first chess programs operated through a Graphical User Interface. The UI was written at Columbia University for the [|IBM 2250 Display Unit], and later evolved along with J. Biit to become the Columbia Computer Chess Program dubbed CCCP.

J. Biit is the acronym of "Just Because it is there", probably in dependance of the famous quote by English mountaineer [|George Mallory], having replied to the question "Why do you want to climb [|Mount Everest]?". || toc =Description= J. Biit was a selective search (Shannon type B) program that places considerable emphasis on chess knowledge and restricting the number of positions to be examined, as it scored only 30-100 positions during a search using alpha-beta and incremental board updating. The program was developed in [|PL/I] on the IBM 360/65 at CMU, but was unable to use that system for the 1970 ACM tournament. Since the 360 line was supposedly compatable, Kenneth M. King offered the services of Columbia's more powerful IBM 360/91. Unfortunately they discovered that it wasn't as compatable as expected and Berliner and assistants spent two rather frantic weeks making program changes. It used about 200 [|Kibibyte] of memory and was about 3500 PL/I statements. The program searches a very small tree. Berliner claimed that, on average, only 30 nodes were examined for a move that required 65 seconds of computation. It used a "free form of search which terminated in quiescent positions ... (with) the only bound being the absolute depth limit of 14 ply." It searched two plies for begining and middle games, and 4 plies for end games.
 * Just Because it is there ||~  ||^   ||

=Quotes= Hans Berliner in his Oral History, March 2005 :

|| =See also=
 * Acronym

=Publications=
 * Hans Berliner (**1970**). //Experiences Gained in Constructing and Testing a Chess Program//. IEEE Symposium System Science and Cybernetics, reprinted in David Levy (ed.) (**1988**). //[|Computer Games I]//.

=External Links=

Chess Program

 * [|Classic Computer Chess - ... The programs of yesteryear] by Carey, hosted by the [|Internet Archive]

Misc
> July 1986 at the [|Wolf Trap National Park for the Performing Arts] in [|Vienna, Virginia] > media type="youtube" key="jN3439l4HR0?rel=0" height="360" width="480"
 * Michael Hedges - Because It's There, [|YouTube] Video

=References= =What links here?= include page="J. Biit" component="backlinks" limit="40"
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