Question: 7.8 Generalize the eight-queens CLP(FD) program to an N queens program. For large N, a good labelling strategy for N queens is 'middle-out', which starts
7.8 Generalize the eight-queens CLP(FD) program to an N queens program. For large N, a good labelling strategy for N queens is 'middle-out', which starts in the middle of the domain and then continues with values further and further away from the middle. Implement this labelling strategy and compare its efficiency experimen- tally with the straight labelling (as in Figure 7.6).
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