Puzzle Detail
Classic Mathdoku Classic 8×8 Hard — Set 100
| 4= | 15+ | 42x | 3= | ||||
| 3= | 6/ | 5= | 4= | 7= | |||
| 22+ | 12+ | 18+ | 6x | ||||
| 1= | 8= | 2= | 15x | ||||
| 19+ | 6 | 15+ | 20+ | 7+ | |||
| 4- | 3 | 7 | 8= | ||||
| 7= | 1= | 2- | 4- | ||||
| 3+ | 22+ | 11+ | 12x |
Show solution
| 4 | 5 | 8 | 2 | 6 | 1 | 7 | 3 |
| 8 | 3 | 2 | 6 | 1 | 5 | 4 | 7 |
| 5 | 2 | 3 | 7 | 4 | 8 | 1 | 6 |
| 7 | 1 | 4 | 8 | 2 | 6 | 3 | 5 |
| 3 | 6 | 7 | 4 | 8 | 2 | 5 | 1 |
| 6 | 4 | 1 | 5 | 3 | 7 | 2 | 8 |
| 2 | 7 | 6 | 1 | 5 | 3 | 8 | 4 |
| 1 | 8 | 5 | 3 | 7 | 4 | 6 | 2 |
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.