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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very hard (0)

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

Difficulty: Super easy (0)