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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)