Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 13
| 5= | 3- | 224x | 6=6 | |||||
| 648x | 1= | 270x | ||||||
| 21x | 6= | 448x | 1- | 6+ | 5= | |||
| 216x | 19+ | 3 | ||||||
| 4- | 60x | 16+9 | 7= | |||||
| 6- | 10+ | 11+ | 9= | |||||
| 23+ | 48x | 756x | 6= | |||||
| 2 | 70x | 3= | 64x | |||||
| 1= | 315x | 3- | 12+ |
Show solution
| 5 | 9 | 3 | 1 | 4 | 8 | 7 | 2 | 6 |
| 3 | 8 | 4 | 7 | 1 | 2 | 6 | 5 | 9 |
| 7 | 3 | 6 | 8 | 9 | 4 | 2 | 1 | 5 |
| 6 | 4 | 9 | 2 | 8 | 1 | 5 | 7 | 3 |
| 2 | 6 | 5 | 4 | 3 | 9 | 1 | 8 | 7 |
| 8 | 7 | 2 | 3 | 5 | 6 | 4 | 9 | 1 |
| 9 | 1 | 8 | 5 | 2 | 7 | 3 | 6 | 4 |
| 4 | 2 | 1 | 6 | 7 | 5 | 9 | 3 | 8 |
| 1 | 5 | 7 | 9 | 6 | 3 | 8 | 4 | 2 |
Solver Notes
Our classic mathdoku puzzles mix all four operations (addition, subtraction, multiplication, division) just like the original KenKen format.
What makes a mathdoku puzzle classic?
Classic mathdoku uses cages with any of the four arithmetic operations, matching the original KenKen-style puzzle format.
Are classic mathdoku puzzles good for beginners?
Start with the 4x4 classic grid — it's the easiest entry point into the full mathdoku experience.
Where can I print classic mathdoku?
Every puzzle page on Freemathdoku.com has a Print button that generates a clean PDF with the answer key.