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

Difficulty: Easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)