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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)