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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 #10

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

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

Answer Key

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

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