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

Difficulty: Very easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Easy (0)

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

Difficulty: Hard (0)