Hard Sudoku Printables

For experienced solvers. Print free Sudoku puzzles as clean PDFs.

Hard Printable Sets

Hard Sudoku Set 1

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

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Hard Sudoku Set 2

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

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Hard Sudoku Set 3

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

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Hard Sudoku Set 4

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

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Hard Sudoku Set 5

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

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Hard Sudoku Set 6

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

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Hard Sudoku Set 7

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

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Hard Sudoku Set 8

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

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Hard Sudoku Set 9

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

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Hard Sudoku Set 10

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

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Hard Sudoku Set 11

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

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Hard Sudoku Set 12

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

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About Hard Sudoku

Hard Sudoku puzzles are selected from validated puzzle pools and are ready for printing on Letter or A4 paper.

Hard Sudoku FAQ

Are hard Sudoku printables free?
Yes. You can generate and print PDF puzzles without registration.

Can I include solutions?
Yes. Select the solutions option or use the set solution PDF link.

About Sudoku

Sudoku is a logic-based number placement puzzle. Fill the 9x9 grid so each row, column, and 3x3 box contains digits 1 to 9 exactly once.

Learn more about Sudoku »

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How to Use

Pick a level that suits you it can be something really tough.
Download the PDF file. Make sure to print it at the right size so the lines are clear.
Use a pencil to fill in the answers and also write down the possibilities in the corners.
If you are stuck and cannot figure it out look at the answers, on the page to help you out.

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