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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)