Cross Sums puzzles, also known as Kakuro puzzles, are challenging yet fun and easy to learn. More addictive than Sudoku - try Kakuro puzzles and see for yourself. Create an unlimited number of Cross Sums puzzles with Amigos Cross Sums. All puzzles have a unique solution. Choose from 5 difficulty levels and 4 grid sizes. Print the puzzles or solve them on screen. Examples, solving hints and techniques are included in the program. Possible values for each combination are shown at the click of your mouse.