Puzzle Detail
Classic Mathdoku Classic 9×9 Medium — Set 25
| 10+ | 11+ | 15+ | 6=6 | |||||
| 5= | 7= | 2/ | 9=9 | 5- | ||||
| 13+ | 8= | 17+ | 1= | 5= | 3 | 48x | 9= | |
| 1- | 5= | 3= | 13+7 | 9 | 2/ | |||
| 15+ | 9= | 10+ | 1- | 15+6 | 3= | |||
| 8 | 6 | 1- | 9 | 7+ | 20x | |||
| 4- | 17+ | 9 | 90x | 1= | 7= | |||
| 14+9 | 9+ | 6x | 3= | 6= | 8= | 5= | ||
| 5 | 4= | 8= | 9= | 1= | 3- | 6= |
Show solution
| 1 | 9 | 2 | 5 | 4 | 8 | 7 | 6 | 3 |
| 3 | 5 | 4 | 6 | 7 | 1 | 2 | 9 | 8 |
| 6 | 4 | 8 | 7 | 1 | 5 | 3 | 2 | 9 |
| 2 | 1 | 5 | 3 | 6 | 7 | 9 | 8 | 4 |
| 7 | 8 | 9 | 1 | 5 | 4 | 6 | 3 | 2 |
| 8 | 6 | 7 | 9 | 2 | 3 | 4 | 5 | 1 |
| 4 | 3 | 6 | 8 | 9 | 2 | 5 | 1 | 7 |
| 9 | 7 | 1 | 2 | 3 | 6 | 8 | 4 | 5 |
| 5 | 2 | 3 | 4 | 8 | 9 | 1 | 7 | 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.