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

Difficulty: Easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)