Very hard Sudoku to print (free PDF)
Download free very hard Sudoku to print in PDF, ready for A4 or US Letter. A demanding challenge, one notch below evil.
Sample puzzles
5
4
2
6
1
3
9
6
2
1
1
2
3
5
7
4
1
8
7
6
3
5
2
4
1
8
6
3
2
8
5
1
3
9
4
8
4
5
6
6
1
9
4
7
5
8
7
9
4
2
3
4
6
9
1
5
6
2
3
1
8
5
2
5
9
8
6
3
9
4
1
2
7
1
3
4
3
4
5
8
3
7
2
4
7
9
7
5
4
4
5
6
8
1
3
7
2
8
3
4
7
8
5
1
8
1
2
6
1
6
2
9
2
7
5
4
3
9
1
7
8
3
5
2
9
3
7
8
5
6
6
2
9
4
5
3
1
9
3
6
7
5
3
7
1
8
9
2
3
6
6
4
2
1
2
5
6
1
8
9
Why this level?
A very hard Sudoku gives few clues, so plain scanning rarely helps. You'll lean on full candidate marks and techniques like pointing pairs and box/line reduction.
How to print
Click "Download book", open the PDF and pick A4 or US Letter. Six puzzles per page; verify with the separate solutions PDF.
Solving tips
Keep complete candidate notes and watch for locked candidates that eliminate options across a box and its row or column.
Frequently asked questions
How hard is very hard compared to evil?
Very hard sits just below our evil level: advanced techniques, but slightly more forgiving.
What should I expect from a very hard Sudoku?
Advanced techniques throughout and few clues, but a notch more forgiving than our evil grids.
Which techniques help most here?
Naked and hidden pairs, X-wing and pointing pairs; meticulous candidate notes keep you from stalling.