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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)