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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)