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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)