Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 6
| 1= | 4 | 8= | 6= | |||||
| 3= | 6- | 196x | 9= | 270x | 1= | 24x | 315x | |
| 8 | 4= | 13+ | 13+ | |||||
| 4= | 7+ | 6=6 | 7x | |||||
| 504x | 4- | 8= | 24x | 2= | 1= | |||
| 48x | 2 | |||||||
| 9/ | 96x | 7x | 22+ | 25+ | 11+ | |||
| 17+ | 7= | 1- | ||||||
| 15+ | 12x | 504x |
Show solution
| 1 | 7 | 4 | 5 | 9 | 8 | 2 | 3 | 6 |
| 3 | 2 | 7 | 9 | 6 | 1 | 4 | 8 | 5 |
| 9 | 8 | 3 | 2 | 4 | 5 | 1 | 6 | 7 |
| 8 | 4 | 2 | 6 | 5 | 3 | 7 | 1 | 9 |
| 7 | 9 | 5 | 3 | 8 | 4 | 6 | 2 | 1 |
| 6 | 1 | 8 | 4 | 7 | 9 | 3 | 5 | 2 |
| 2 | 6 | 9 | 8 | 1 | 7 | 5 | 4 | 3 |
| 5 | 3 | 1 | 7 | 2 | 6 | 8 | 9 | 4 |
| 4 | 5 | 6 | 1 | 3 | 2 | 9 | 7 | 8 |
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.