Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 69
| 7= | 2- | 3= | ||||||
| 8= | 360x | 17+ | 42x | 13+ | ||||
| 11+ | 1= | 2= | 6= | 7= | 9= | 4= | ||
| 1= | 9= | 7= | 5= | 14+ | 6= | |||
| 2= | 120x | 3-3 | 19+ | |||||
| 9= | 5+ | 16+ | 480x | 9x | ||||
| 14+ | 4- | 2= | 35x | |||||
| 4= | 7 | 9 | 8/ | 12x | ||||
| 5= | 54x | 315x | 9= | 64x | 8 |
Show solution
| 7 | 2 | 8 | 6 | 3 | 9 | 5 | 1 | 4 |
| 8 | 5 | 9 | 4 | 1 | 2 | 6 | 7 | 3 |
| 3 | 8 | 1 | 2 | 6 | 7 | 9 | 4 | 5 |
| 1 | 9 | 7 | 5 | 4 | 8 | 2 | 3 | 6 |
| 2 | 4 | 5 | 1 | 8 | 6 | 3 | 9 | 7 |
| 9 | 6 | 2 | 3 | 7 | 5 | 4 | 8 | 1 |
| 6 | 1 | 4 | 8 | 2 | 3 | 7 | 5 | 9 |
| 4 | 7 | 3 | 9 | 5 | 1 | 8 | 6 | 2 |
| 5 | 3 | 6 | 7 | 9 | 4 | 1 | 2 | 8 |
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.