Puzzle Detail
Classic Mathdoku Classic 9×9 Hard — Set 7
| 15x | 8= | 8+ | 2/ | 16+ | ||||
| 324x | 2 | 16+ | 18+ | |||||
| 4= | 864x | 3- | 1= | 5 | ||||
| 1= | 17+ | 8= | 180x | |||||
| 5= | 11+ | 9=9 | 6x | 8= | ||||
| 32x | 7+ | 5= | 112x | |||||
| 63x | 108x | 30x | ||||||
| 14+ | 27x | 192x | 10+ | 6= | 3=3 | |||
| 8= | 70x | 12+ |
Show solution
| 9 | 5 | 3 | 8 | 7 | 1 | 2 | 4 | 6 |
| 6 | 2 | 5 | 9 | 1 | 8 | 4 | 7 | 3 |
| 3 | 4 | 2 | 6 | 8 | 9 | 7 | 1 | 5 |
| 2 | 1 | 7 | 5 | 6 | 3 | 8 | 9 | 4 |
| 5 | 7 | 4 | 3 | 9 | 6 | 1 | 8 | 2 |
| 4 | 8 | 1 | 2 | 3 | 5 | 9 | 6 | 7 |
| 1 | 6 | 9 | 7 | 2 | 4 | 3 | 5 | 8 |
| 7 | 9 | 8 | 4 | 5 | 2 | 6 | 3 | 1 |
| 8 | 3 | 6 | 1 | 4 | 7 | 5 | 2 | 9 |
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.