hi, i am clueless, how to solve this killer sudoku with inequalities... so far i just know that 7th digit in 1st row is 7 (so 7th digit in 2nd row will be 8 or 9) and that i can divide the lower 19 cage into two smaller cages of sums 5 and 14... that is all i know, will appreciate any help, thanks in advance...