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

Difficulty: Hard (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)