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

Difficulty: Hard (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)