Puzzle Detail
Classic Mathdoku Classic 9×9 Medium — Set 23
| 2 | 8= | 5= | 7= | 10+ | 6= | 5- | ||
| 3+ | 7= | 3= | 13+ | 8 | 6- | |||
| 14+6 | 9= | 8= | 5=5 | 6x | 7 | |||
| 14+2 | 3- | 35x | ||||||
| 19+ | 8+ | 108x | 6x | 5 | 20+ | |||
| 3 | 12+ | 4= | 3- | 10+ | ||||
| 3- | 2 | 1= | 7= | 3 | 18+ | 6= | ||
| 5= | 6+ | 3= | 8+ | 72x | ||||
| 23+6 | 5 | 7+ | 8= | 16+ | 1= |
Show solution
| 2 | 8 | 5 | 7 | 3 | 1 | 6 | 4 | 9 |
| 1 | 7 | 3 | 9 | 4 | 6 | 8 | 2 | 5 |
| 4 | 6 | 9 | 8 | 5 | 2 | 1 | 3 | 7 |
| 9 | 4 | 6 | 2 | 8 | 5 | 3 | 7 | 1 |
| 3 | 1 | 7 | 6 | 9 | 4 | 2 | 5 | 8 |
| 7 | 3 | 1 | 4 | 6 | 9 | 5 | 8 | 2 |
| 5 | 2 | 8 | 1 | 7 | 3 | 4 | 9 | 6 |
| 8 | 5 | 2 | 3 | 1 | 7 | 9 | 6 | 4 |
| 6 | 9 | 4 | 5 | 2 | 8 | 7 | 1 | 3 |
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.