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

Difficulty: Harder (0)

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

Difficulty: Easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Easy (0)