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)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)