8
	8				1	4
				8		9		3
5				9
		9	8		2	5
				4				1
7		6		2
		5	3				7
	2

Difficulty: Easy (0)

	8		9	3				5
	1			8	2
7						2
		5		1		3
			6		9
		6		2		9
		8						7
			7	5			2
1				4	3		8

Difficulty: Super easy (0)

2		8	7				6
6					1
	1			3	6	9		5
								9
		1				5
9
4		2	9	6			5
			3					4
	7				2	3		6

Difficulty: Very easy (0)

	9					2
				7		3	4	5
6						5	3
			6	9	1
	4	7						2
8	7	2		6
		4					7

Difficulty: Very easy (0)