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

Difficulty: Hard (0)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)