Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 11
| 1= | 3= | 23+ | 200x | 3- | ||||
| 14x | 6= | 72x | ||||||
| 5- | 5- | 6= | 3= | |||||
| 7- | 70x | 120x | 28+ | |||||
| 8= | 6/1 | 21+ | 3= | |||||
| 9+ | 15+ | 3+ | 7= | |||||
| 24x | 27+ | 2= | 8=8 | |||||
| 63x | 108x | 105x7 | 300x | |||||
| 11+ | 24x1 | 2= |
Show solution
| 1 | 2 | 3 | 4 | 7 | 5 | 8 | 9 | 6 |
| 3 | 1 | 7 | 6 | 8 | 4 | 5 | 2 | 9 |
| 8 | 7 | 5 | 2 | 4 | 9 | 6 | 3 | 1 |
| 2 | 9 | 1 | 5 | 3 | 8 | 7 | 6 | 4 |
| 5 | 8 | 4 | 1 | 6 | 2 | 9 | 7 | 3 |
| 4 | 5 | 6 | 3 | 9 | 1 | 2 | 8 | 7 |
| 6 | 4 | 9 | 7 | 2 | 3 | 1 | 5 | 8 |
| 9 | 6 | 2 | 8 | 1 | 7 | 3 | 4 | 5 |
| 7 | 3 | 8 | 9 | 5 | 6 | 4 | 1 | 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.