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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)