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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)