Socrates II

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Socrates II is a chess program that, in 1993, won the 23rd North American Computer Chess Championship. It ran on an IBM PC. This was the first and only time that a stock microcomputer won this event, finishing ahead of past winners Cray Blitz and HiTech. The authors, Don Dailey and Larry Kaufman, renewed their collaboration twenty years later to create the Komodo chess engine.

In computer chess, a chess engine is a computer program that analyzes chess or chess variant positions, and generates a move or list of moves that it regards as strongest. A chess engine is usually a back end with a command-line interface with no graphics nor windowing. Engines are usually used with a front end, a windowed graphical user interface such as Chessbase or WinBoard that the user can interact with via a keyboard, mouse or touchscreen. This allows the user to play against multiple engines without learning a new user interface for each, and allows different engines to play against each other.

The North American Computer Chess Championship was a computer chess championship held from 1970 to 1994. It was organised by the Association for Computing Machinery and by Dr. Monty Newborn, Professor of Computer Science at McGill University. It was one of the first computer chess tournaments. The 14th NACCC was also the World Computer Chess Championship.

Microcomputer small, relatively inexpensive computer

A microcomputer is a small, relatively inexpensive computer with a microprocessor as its central processing unit (CPU). It includes a microprocessor, memory, and minimal input/output (I/O) circuitry mounted on a single printed circuit board. Microcomputers became popular in the 1970s and 1980s with the advent of increasingly powerful microprocessors. The predecessors to these computers, mainframes and minicomputers, were comparatively much larger and more expensive. Many microcomputers are also personal computers.

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This article documents the progress of significant human–computer chess matches.

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