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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)