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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)