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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)