Puzzle Detail
Classic Mathdoku Classic 8×8 Hard — Set 87
| 20x5 | 3= | 7= | 12x | ||||
| 1= | 80x | 6= | 7= | 3= | 4= | 18+ | |
| 4= | 4- | 16+ | |||||
| 8=8 | 5- | 2= | 12+ | 5= | |||
| 60x | 1- | ||||||
| 2= | 6= | 4= | 392x | 7 | 63x | ||
| 40x | 20x | 12x | |||||
| 441x | 13+ | 3/ |
Show solution
| 5 | 4 | 3 | 7 | 2 | 6 | 1 | 8 |
| 1 | 8 | 2 | 6 | 7 | 3 | 4 | 5 |
| 4 | 5 | 7 | 3 | 6 | 2 | 8 | 1 |
| 8 | 1 | 6 | 2 | 3 | 7 | 5 | 4 |
| 6 | 2 | 5 | 4 | 1 | 8 | 3 | 7 |
| 2 | 6 | 4 | 5 | 8 | 1 | 7 | 3 |
| 7 | 3 | 8 | 1 | 5 | 4 | 6 | 2 |
| 3 | 7 | 1 | 8 | 4 | 5 | 2 | 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.