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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)