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

Difficulty: Very easy (0)

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

Difficulty: Harder (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)