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Learn Prolog Now, Exercises 2.3 Crossword
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| % 2.3 | |
| word(astante, a,s,t,a,n,t,e). | |
| word(astoria, a,s,t,o,r,i,a). | |
| word(baratto, b,a,r,a,t,t,o). | |
| word(cobalto, c,o,b,a,l,t,o). | |
| word(pistola, p,i,s,t,o,l,a). | |
| word(statale, s,t,a,t,a,l,e). | |
| crossword(V1, V2, V3, H1, H2, H3) :- | |
| word(V1, _,V1H1,_,V1H2,_,V1H3,_), | |
| word(V2, _,V2H1,_,V2H2,_,V2H3,_), | |
| word(V3, _,V3H1,_,V3H2,_,V3H3,_), | |
| word(H1, _,V1H1,_,V2H1,_,V3H1,_), | |
| word(H2, _,V1H2,_,V2H2,_,V3H2,_), | |
| word(H3, _,V1H3,_,V2H3,_,V3H3,_), | |
| V1 \= V2, | |
| V2 \= V3, | |
| V3 \= H1, | |
| H1 \= H2, | |
| H2 \= H3. |
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| ?- crossword(V1,V2,V3,H1,H2,H3). | |
| V1 = astante, | |
| V2 = baratto, | |
| V3 = statale, | |
| H1 = astante, | |
| H2 = baratto, | |
| H3 = statale |
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