4	6			7		1	5	10
	10		2				6		5
1
				4			7	3
8						10			9
7			5						1
	8	7			1
									4
5		2				6		8
	2	8	3		7			6	10

Difficulty: Hard (0)

1		8				7			5
			7					1
			6						2
7				2	5		4		8
		9					1		4
3		4					10
8		10		9	7				6
4						10
	3					5
2			5				7		3

Difficulty: Very easy (0)

		5		6			8		1
6	2					1			3
			10						2
	5	6	2	3		8
			8		6	3	5	10
7						6
4			7					1	5
9		3			1		4

Difficulty: Easy (0)

		2		7	1	3
10		8	4		5
7							6		2
5	1				8	9		4
	9
								1
	7		9	2				6	1
4		9							7
				5		6	10		8
			1	8	10		4

Difficulty: Super easy (0)