NOUGHTS AND CROSSES PROGRAM
              Written by David Green, Edinburgh University
                        Shelved on 21 August 1993


This entry comes as two files: this one, NOUGHTS_AND_CROSSES.PRE, and
the program, NOUGHTS_AND_CROSSES.PL. To use it, load the program, and
call
    play(X).
The program will prompt you for moves and describe its own, and will
bind X to the result of the game. There is an example of play in the
comments at the end of the source code.


CHECKED ON EDINBURGH-COMPATIBLE (POPLOG) PROLOG : no.


PORTABILITY : looks pretty good. Program was developed under Sicstus
Prolog.                  


INTERNAL DOCUMENTATION : Predicates are commented with a statement      
of their purpose.