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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Super easy (0)