Puzzle Detail
Classic Mathdoku Classic 8×8 Hard — Set 68
| 21x | 13+ | 3= | 4= | 20+ | |||
| 126x | 1= | 5= | 10+ | ||||
| 15+ | 6 | ||||||
| 16x | 4/ | 4= | 3= | 8= | |||
| 7= | 17+ | 5= | 90x | 4= | |||
| 3= | 23+ | 1=1 | 2- | ||||
| 2- | 8 | 10x | 10+ | ||||
| 480x | 336x | 3= |
Show solution
| 7 | 5 | 1 | 3 | 4 | 2 | 8 | 6 |
| 3 | 8 | 6 | 1 | 5 | 4 | 7 | 2 |
| 8 | 4 | 3 | 7 | 2 | 6 | 5 | 1 |
| 2 | 1 | 5 | 4 | 3 | 7 | 6 | 8 |
| 1 | 7 | 2 | 6 | 8 | 5 | 3 | 4 |
| 6 | 3 | 4 | 2 | 7 | 8 | 1 | 5 |
| 4 | 6 | 8 | 5 | 1 | 3 | 2 | 7 |
| 5 | 2 | 7 | 8 | 6 | 1 | 4 | 3 |
Solver Notes
6
1
8
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.