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

Difficulty: Hard (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)