One Jump Ahead pp 429-440 | Cite as

Gentlemen’s Agreement

  • Jonathan Schaeffer


I returned home and quietly disappeared for a while. I had little motivation to work on anything. After the 1992 match there was considerable interest in Chinook. In contrast, coming back from Boston was awful. Everyone knew what had happened, but no one wanted to talk about it. All my friends had seen the horrible messages posted to We were the world manmachine champion, but I didn’t feel like letting anyone know. There was nothing to celebrate.


Opening Book Silicon Graphic International Checker World Champion Firm Contract 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Letter from Charles Walker to Tony Buzan, copies to Silicon Graphics, the ACF, and the people involved with the Boston matches, dated September 1, 1994.Google Scholar
  2. 2.
    Letter to Raymond Keene, dated September 6, 1994.Google Scholar
  3. 3.
    Letter to Raymond Keene, dated September 26, 1994.Google Scholar
  4. 4.
    Charles Walker to Jonathan Schaeffer, dated October 27, 1994.Google Scholar
  5. 5.
    Jonathan Schaeffer to Charles Walker, dated November 4, 1994.Google Scholar
  6. 6.
    Charles Walker to Jonathan Schaeffer, dated November 8, 1994.Google Scholar
  7. 7.
    Checkers, 1994 annual edition, p. 113.Google Scholar
  8. 8.
    Derek’s opening book is one of my treasured checkers possessions. I have not used it to find his cooks. The book is written in Derek’s own, nonstandard checkers notation. To get it into machine-readable form will involve a large time commitment.Google Scholar
  9. 9.
    Note the additional field in the Chinook output. I added an annotate facility. “O” is an opening ballot move (see move 1), “B” is a book move (move 2), “C” is a cook (move 3), “X” is a forced capture (move 9), “w” is a database win (move 20), “L” is a database loss, and “D” is a draw.Google Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Jonathan Schaeffer
    • 1
  1. 1.Department of Computing ScienceUniversity of AlbertaEdmontonCanada

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