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{Solution: 9,5,6,7,0,8,2}
puzzle:- repeat, permute ((9,8,7,6,5,2,0), SENDMORY),
write (SENDMORY),
puzzle (SENDMORY, SEND, MORE, MONEY),
elan (line),
write (SEND), write (+),
write (MORE), write (=),
write (MONEY).
puzzle([S,E,N,D,O,R,Y], SEND, MORE, MONEY):-
SEND IS ((S * 10 + E) * 10 + N) * 10 + D,
MORE IS ((10 + O) * 10 + R) * 10 + E,
MONEY IS (((10 + O) * 10 + N) * 10 + E) * 10 + Y,
MONEY IS SEND + MORE.
permute ([], []).
permute ([E|X], Z):- permute (X, Y), insert (E, Y, Z).
insert (E, X, [E|X]).
insert (E, [F|X], [F|Y]):- insert (E, X, Y).
repeat.
repeat:- repeat.
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