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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)