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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)