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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 #20

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

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

Answer Key

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

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