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

Difficulty: Hard (0)

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

Difficulty: Harder (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)