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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)