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

Difficulty: Super easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)