100 different Kakuro puzzles in different sizes from 5x5 to 10x10. The puzzles may be freely distributed or used for publication. Kakuro - also called "Cross Sums" - is a logic puzzle similar to traditional crossword games, using digits instead of letters. A Kakuro puzzle consists of a grid with filled and empty cells. The goal is to put numbers in the empty cells that add up to the sum associated with it. The Puzzles are in Adobe PDF file format and have not to be installed. You can easily print and then work them out with pencil and paper.