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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)