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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)