Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 9
| 23+ | 14+ | 210x5 | 3+2 | |||||
| 5= | 3/ | 2= | 8= | |||||
| 192x | 9 | 16+ | 420x7 | |||||
| 84x | 216x | 8= | 14+ | |||||
| 5= | 3+ | |||||||
| 1= | 24+ | 5= | 20+ | 56x | ||||
| 6= | 24x | 14+ | 3= | |||||
| 5= | 26+ | 7+ | 8= | 2- | ||||
| 16+ | 216x | 4= | 9= |
Show solution
| 9 | 8 | 6 | 3 | 4 | 7 | 5 | 1 | 2 |
| 5 | 3 | 9 | 2 | 8 | 4 | 7 | 6 | 1 |
| 8 | 6 | 4 | 9 | 1 | 2 | 3 | 7 | 5 |
| 4 | 1 | 7 | 6 | 2 | 3 | 8 | 5 | 9 |
| 3 | 9 | 8 | 5 | 6 | 1 | 2 | 4 | 7 |
| 1 | 7 | 2 | 4 | 5 | 9 | 6 | 3 | 8 |
| 6 | 4 | 1 | 8 | 7 | 5 | 9 | 2 | 3 |
| 2 | 5 | 3 | 7 | 9 | 6 | 1 | 8 | 4 |
| 7 | 2 | 5 | 1 | 3 | 8 | 4 | 9 | 6 |
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.