%problem from http://www.parade.com/askmarilyn/numbrix/archive/blueberry/Numbrix-20120122.html
#const n=9.
hint(1,1,11).
hint(1,3,13).
hint(1,5,19).
hint(1,7,25).
hint(1,9,27).
hint(3,1,7).
hint(3,9,33).
hint(5,1,81).
hint(5,9,49).
hint(7,1,79).
hint(7,9,53).
hint(9,1,75).
hint(9,3,73).
hint(9,5,63).
hint(9,7,59).
hint(9,9,55).
