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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)