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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)