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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)