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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)