If you spent hours and hours playing Sudoku, you will find it really hard not to play Kakuro, the great game of cross sums!
Show your intelligence resolving infinity of puzzles.
Fill in the board with numbers from 1 to 9, so that all numbers either in a column or a row add up to the quantity that appears at the upper or left square respectively. But... be careful! You can't repeat the same number at the same sum.