Puzzle Detail
_v1 8×8 Mathdoku 8×8 Hard — Set 5
| 3= | 1= | 1- | 5- | 4- | |||
| 2= | 5 | 192x | 7= | 3- | |||
| 18+ | 18+ | 18x | |||||
| 7= | 1 | 5= | 6= | ||||
| 4- | 5= | 8= | 2- | 3/ | 3= | ||
| 20+ | 12+ | 7= | 5= | ||||
| 2 | 8+ | ||||||
| 30x | 23+ | 2= | 3= | 14x |
Show solution
| 3 | 1 | 5 | 6 | 2 | 7 | 8 | 4 |
| 2 | 3 | 4 | 5 | 6 | 1 | 7 | 8 |
| 1 | 7 | 6 | 2 | 3 | 8 | 4 | 5 |
| 7 | 8 | 2 | 3 | 1 | 4 | 5 | 6 |
| 4 | 5 | 1 | 7 | 8 | 6 | 2 | 3 |
| 8 | 4 | 3 | 1 | 7 | 5 | 6 | 2 |
| 6 | 2 | 8 | 4 | 5 | 3 | 1 | 7 |
| 5 | 6 | 7 | 8 | 4 | 2 | 3 | 1 |
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.