Puzzle Detail
Classic Mathdoku Classic 8×8 Hard — Set 9
| 80x | 15+ | ||||||
| 11+ | 9+ | 1- | 2 | ||||
| 15+ | 6= | 5 | 7= | 2= | |||
| 16+ | 3- | 14+ | 192x | ||||
| 50x | |||||||
| 17+ | 28x | 3= | 6= | 4= | |||
| 10x | 4= | 14+ | 56x | 8 | |||
| 7= | 4x | 24+ |
Show solution
| 3 | 4 | 6 | 8 | 5 | 2 | 1 | 7 |
| 4 | 1 | 3 | 6 | 8 | 7 | 2 | 5 |
| 8 | 6 | 5 | 7 | 2 | 4 | 3 | 1 |
| 6 | 3 | 8 | 5 | 7 | 1 | 4 | 2 |
| 7 | 5 | 2 | 1 | 4 | 6 | 8 | 3 |
| 5 | 8 | 7 | 2 | 1 | 3 | 6 | 4 |
| 1 | 2 | 4 | 3 | 6 | 5 | 7 | 8 |
| 2 | 7 | 1 | 4 | 3 | 8 | 5 | 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.