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

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)