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

Difficulty: Harder (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)

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

Difficulty: Easy (0)