Puzzle Detail
_v1 8×8 Mathdoku 8×8 Hard — Set 3
| 90x | 9+ | 168x | |||||
| 3 | 192x | 22+ | |||||
| 1= | 11+ | 6= | 4= | ||||
| 12+ | 25+ | 14+ | 6= | ||||
| 4 | 8= | 7= | |||||
| 4= | 3= | 300x | 5+ | ||||
| 336x | 7= | 9+ | 6= | 80x | |||
| 12x4 | 6= | 3- |
Show solution
| 6 | 5 | 1 | 8 | 7 | 2 | 4 | 3 |
| 3 | 6 | 4 | 1 | 8 | 5 | 7 | 2 |
| 1 | 8 | 5 | 2 | 3 | 7 | 6 | 4 |
| 5 | 2 | 8 | 7 | 4 | 3 | 1 | 6 |
| 4 | 1 | 6 | 5 | 2 | 8 | 3 | 7 |
| 7 | 4 | 3 | 6 | 5 | 1 | 2 | 8 |
| 8 | 7 | 2 | 3 | 6 | 4 | 5 | 1 |
| 2 | 3 | 7 | 4 | 1 | 6 | 8 | 5 |
Solver Notes
Browse our full collection of 8x8 mathdoku puzzles — available in easy, medium, and hard difficulties, free to play online or print as PDF.
What is a 8x8 mathdoku?
A 8x8 mathdoku is a 8x8 grid number puzzle where you place digits 1–8 so no number repeats in any row or column, and each boldly outlined cage evaluates to a given target using the specified operation.
How hard is a 8x8 mathdoku?
The 8x8 grid is challenging and suitable for advanced solvers and adults.
Can I print 8x8 mathdoku puzzles?
Yes — all our 8x8 mathdoku puzzles are print-ready. Use the Print button on any puzzle page to download a clean PDF version with the solution included.