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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 #19

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

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

Answer Key

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

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