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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)