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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)