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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)