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

Difficulty: Easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)