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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)