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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)