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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Super easy (0)