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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Medium (0)