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A challenging large-print sudoku for experienced solvers — expect real pencil-work. Verified to have exactly one solution. This sheet is free and printed in large, senior-friendly type — use the Print button above for a paper copy, or choose “Save as PDF” in the print dialog. Prints as the puzzle only — tick the box below if you’d like the answer key included (it prints on its own page).

Sudoku — Hard #18

Instructions: Fill the grid so every row, column, and 3×3 box contains the numbers 1–9.

Level: hard
3
8
9
1
7
8
6
9
8
2
4
7
1
9
5
4
5
1
6
9
7
4
5
7
6
3
9

Answer Key

3
6
7
2
4
8
9
1
5
8
1
4
6
5
9
7
2
3
9
2
5
7
1
3
4
8
6
6
9
8
5
3
2
1
4
7
2
7
1
4
9
6
5
3
8
4
5
3
1
8
7
6
9
2
7
4
9
8
2
5
3
6
1
5
3
2
9
6
1
8
7
4
1
8
6
3
7
4
2
5
9

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