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

Difficulty: Very easy (0)

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

Difficulty: Medium (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)