r 1: c 5-10. r 8: c 2-10, 12. r 12: c 2-4, 9-11. c 14: r 5-6. There is a diagonal line connecting the 3 in column 1 to the 6 in row 1 and another one connecting the 6 to the 2 in column 14.
Normally I don't like to give that many hints, but that was what it took to make logical solving possible.
Hints:
r 1: c 5-10.
r 8: c 2-10, 12.
r 12: c 2-4, 9-11.
c 14: r 5-6.
There is a diagonal line connecting the 3 in column 1 to the 6 in row 1 and another one connecting the 6 to the 2 in column 14.
Normally I don't like to give that many hints, but that was what it took to make logical solving possible.