%problem from http://www.parade.com/askmarilyn/numbrix/archive/blueberry/Numbrix-20111204.html
#const n=9.
hint(1,1,9).
hint(1,3,11).
hint(1,5,33).
hint(1,7,39).
hint(1,9,45).
hint(3,1,7).
hint(3,9,47).
hint(5,1,5).
hint(5,9,59).
hint(7,1,19).
hint(7,9,69).
hint(9,1,21).
hint(9,3,77).
hint(9,5,75).
hint(9,7,73).
hint(9,9,71).
