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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)