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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)