Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 88
| 192x | 336x | 17+ | ||||||
| 14+ | 63x | 3 | ||||||
| 19+ | 9/ | 12x | 4 | |||||
| 8= | 20+ | 7=7 | 15+ | 2/ | ||||
| 17+ | 12+ | 9= | 8= | 7/ | ||||
| 21+ | 17+ | 3= | ||||||
| 2= | 8= | 18+ | 1= | 60x | 56x | |||
| 9= | 11+ | 1- | 1= | 3= | ||||
| 4x4 | 15+ | 40x | 9= |
Show solution
| 4 | 2 | 1 | 8 | 3 | 6 | 7 | 9 | 5 |
| 5 | 7 | 9 | 2 | 4 | 1 | 8 | 6 | 3 |
| 3 | 8 | 6 | 7 | 5 | 9 | 2 | 1 | 4 |
| 8 | 9 | 3 | 1 | 7 | 5 | 6 | 4 | 2 |
| 6 | 3 | 2 | 5 | 9 | 8 | 4 | 7 | 1 |
| 7 | 1 | 5 | 6 | 2 | 4 | 9 | 3 | 8 |
| 2 | 6 | 4 | 9 | 8 | 3 | 1 | 5 | 7 |
| 9 | 5 | 8 | 4 | 1 | 7 | 3 | 2 | 6 |
| 1 | 4 | 7 | 3 | 6 | 2 | 5 | 8 | 9 |
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.