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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)