9	1		4		2					11	8
			9	10					2	12
				11					1		7
10	5		3					11	6
						11		2	10
		4				3
					9				4
		9	2		1
		1	6					5		9	4
6		12					1
	3	6					10	8
5	11					12		9		8	10

Difficulty: Very easy (0)

							8			6	5
4			3	1	6						9
	2		7								4
9		6						7	1		10
10		11		9		4	3
	3	9						12
			5						9	1
				5	12		11		3		6
3		2	10						6		12
8								1		2
7						5	12	6			3
5	10			12

Difficulty: Easy (0)

	10	9	3				5				12
				5					11		8
1					7				3
12			9			1
		4		7					5
	7				12				2		9
6		5				4				3
		2					7		10
					10			5			3
		7				6					2
10		8					6
9				12				2	6	5

Difficulty: Easy (0)

	12			8	2	11		1		6
	9	2		6		5		4
11									4	1
	1						11
2			10		9			5		3
	6					7
					11					12
	4		7			9		12			5
				3						7
	11	12									9
			2		10		6		12	5
	3		9		6	4	8			2

Difficulty: Easy (0)