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

Difficulty: Hard (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)