Kakuro #73
Each white cell must contain a number in the range 1–9. The sum of the numbers in strips of horizontally or vertically adjacent white cells is given in the black cells before or above (like the word definitions in a crossword puzzle). A number may not appear more than once in a sum.
Short manual
Combinations tables give all the valid combinations for a given sum and number of digits. You can also use the calculator.
Enter the sum and number of digits in the fields below, and click the Calculate button.