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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Hard (0)