Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 44
| 2- | 7= | 12+ | 6= | 1- | ||||
| 5= | 7= | 1= | 9= | 3= | 23+ | |||
| 7/ | 16+ | 4= | 5 | |||||
| 8/ | 21+ | 9= | 35x7 | 15x | ||||
| 128x2 | 11+ | 9= | 864x | |||||
| 54x | 24+ | |||||||
| 3= | 9+ | 168x | 8+ | 10x | ||||
| 6 | 9+ | 12+ | ||||||
| 36x | 200x | 14x | 3= | 8= | 28x | 6= |
Show solution
| 3 | 5 | 9 | 7 | 4 | 8 | 6 | 2 | 1 |
| 5 | 7 | 4 | 1 | 2 | 9 | 3 | 6 | 8 |
| 7 | 1 | 2 | 8 | 6 | 4 | 5 | 3 | 9 |
| 1 | 8 | 6 | 9 | 3 | 2 | 7 | 5 | 4 |
| 4 | 2 | 7 | 6 | 1 | 5 | 9 | 8 | 3 |
| 2 | 6 | 1 | 3 | 8 | 7 | 4 | 9 | 5 |
| 8 | 9 | 3 | 4 | 5 | 6 | 1 | 7 | 2 |
| 6 | 3 | 8 | 5 | 9 | 1 | 2 | 4 | 7 |
| 9 | 4 | 5 | 2 | 7 | 3 | 8 | 1 | 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.