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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)