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

Difficulty: Hard (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)