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

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)