Albert L. Zobrist

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The first ever program to play whole Go games was that of Albert L. Zobrist (USA). It was written as part of a PhD thesis on pattern? recognition.

The program divided the game into four phases: fuseki, extension towards tengen, defence and attack of loosely staked out territory, and yose. Each phase had a separate set of match patterns to find the most appropriate moves.

Zobrist's program played a game against George Cowan (and won by 7 points) on the 17th of November 1968.

Zobrist introduced the idea of using an influence function to segment the board into black and white territory, too.


  • Zobrist, A. L. A model of visual organisation for the game Go. In Proceedings of the Spring Joint Computer Conference, volume 34, pages 103 - 112, 1969.
  • Zobrist, A. L. Feature Extractions and Representation for Pattern Recognition and the Game of Go. Phd, Graduate School of the University of Wisconsin, August 1970.

Albert L. Zobrist last edited by DudleyMoore on October 5, 2017 - 10:47
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