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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)