This is one solution to the puzzle (sums 1-12 on the bottom, plus uses no repeated tiles in any column).
-5 2 9 6 12 0 12 7 -5 -11 11 -1 -1 11 -9 9 -11 5 8 -2 10 0 -1 13 5 5 1 7 -9 -3 -7 13 1 12 1 11 -4 -7 -3 -8 4 -6 3 -4 -6 6 -2 -7 6 -9 5 -10 9 10 -9 -6 9 3 2 -4 ------------------------------------------------- 1 2 3 4 5 6 7 8 9 10 11 12