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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)