Kakuro++: Cross Sums

Discover Kakuro with more than 3,000 puzzles, ranging from very easy introductory grids to demanding challenges for experienced players. Kakuro, also known as Cross Sums, combines numerical logic with the structure of a crossword. Fill each white cell with a digit from 1 to 9 so that every horizontal and vertical group matches its clue. A digit may not appear twice within the same group. NEW TO KAKURO? Start with small beginner puzzles and use the interactive tutorial to learn the rules step by step. The difficulty increases progressively, allowing you to develop your solving techniques at your own pace. MORE THAN 3,000 PUZZLES Explore a large collection covering a wide range of sizes and difficulty levels: • Introductory puzzles for new players • Progressive levels for regular practice • Difficult and extremely challenging grids • Hundreds of hours of logical deduction TOOLS FOR SERIOUS SOLVERS • Pencil marks to record possible digits • Undo up to 100 moves • A visual guide showing valid combinations for each clue • Clear, readable grids and controls • Automatic removal of notes that are no longer possible OPTIONAL HELP WHEN YOU NEED IT Kakuro++ includes several levels of assistance: • Check whether the grid contains an error without revealing its position • Locate an incorrect digit • Correct mistakes • Receive a hint when you are stuck Use only the assistance you need and continue solving the puzzle yourself. HOW TO PLAY 1. Fill the white cells with digits from 1 to 9. 2. Each horizontal or vertical group must add up to its clue. 3. A digit cannot be repeated within the same group. 4. Complete the entire grid without errors. Whether you are discovering Kakuro for the first time or looking for difficult Cross Sums, Kakuro++ offers a long and progressive puzzle experience.