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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)