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

Difficulty: Very easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)