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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Very easy (0)