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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)