Brain Training⭐⭐
Sudoku Classic
⏱ 8 minPlay ▶
About Kakuro
Number crossword puzzle. This free online game is part of our brain training collection and is designed for players of all ages.
- Difficulty: hard
- Average play time: 12 minutes
- No download or signup required
- Works on desktop and mobile devices
🎮 How to Play Kakuro
Kakuro is like a number crossword. Each row and column of empty cells must add up to the clue number, using only digits 1-9 with no repetition.
- Read the clues: Numbers in triangular cells tell you the sum for that row or column segment.
- Use unique digits: Each digit 1-9 can only appear once in each segment.
- Know your sums: Certain sums have only one possible combination (e.g., 3 in two cells must be 1+2).
💡 Kakuro Strategies
- Learn magic numbers: 3=1+2, 4=1+3, 6=1+2+3, 7=1+2+4, etc.
- Use intersections: Find cells where unique combinations overlap.
- Process of elimination: As you fill cells, remaining options narrow down.
- Start with extremes: Very low or very high sums have fewer possible combinations.
🧠 Brain Benefits
Kakuro combines arithmetic with logic, exercising both numerical computation and deductive reasoning simultaneously. It's excellent for maintaining mathematical fluency and is particularly popular among those who enjoy Sudoku but want an additional arithmetic challenge.