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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)