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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)