Puzzle Detail
Classic Mathdoku Classic 8×8 Hard — Set 8
| 84x | 5= | 96x | 5- | 6= | |||
| 2= | 8= | 1= | |||||
| 8= | 6= | 126x | 1=1 | 50x | 4= | ||
| 6= | 5= | 3= | 40x | 8 | |||
| 7= | 6= | 3= | |||||
| 20x | 17+ | 8= | 28x | 3= | 6= | 80x | |
| 13+ | 11+ | ||||||
| 9+3 | 2= | 336x | 11+ |
Show solution
| 7 | 3 | 1 | 5 | 4 | 8 | 2 | 6 |
| 2 | 4 | 6 | 8 | 3 | 5 | 7 | 1 |
| 8 | 6 | 3 | 7 | 1 | 2 | 5 | 4 |
| 6 | 7 | 5 | 3 | 2 | 4 | 1 | 8 |
| 4 | 8 | 7 | 6 | 5 | 1 | 3 | 2 |
| 1 | 2 | 8 | 4 | 7 | 3 | 6 | 5 |
| 5 | 1 | 4 | 2 | 6 | 7 | 8 | 3 |
| 3 | 5 | 2 | 1 | 8 | 6 | 4 | 7 |
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.