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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Hard (0)