Do you ever need help with figuring out what the possible sum number combinations are in Kakuro, CalcuDoku or Killer Sudoku puzzles? Well, I’ve prepared a calculator for you to help you out figure out which numbers can or cannot be a part of the sum. Just enter the “Sum”, choose how many numbers go into the sum, and optionally select which ones you want to use. Click Calculate and voila!

Here is the calculator:

Sum (or product or…)Operation+  *  –  /  no op
Number of cells2  3  4  5  6  7  8  9
Maximum repeats?No repeats  1  2  3  4  5  6  7  8
Allowed numbers0  1  2  3  4  5  6  7  8  9