%problem from http://www.parade.com/askmarilyn/numbrix/archive/blueberry/Numbrix-20120215.html
#const n=9.
hint(1,1,29).
hint(1,3,27).
hint(1,5,21).
hint(1,7,15).
hint(1,9,9).
hint(3,1,33).
hint(3,9,7).
hint(5,1,43).
hint(5,9,61).
hint(7,1,45).
hint(7,9,67).
hint(9,1,47).
hint(9,3,51).
hint(9,5,81).
hint(9,7,73).
hint(9,9,69).
