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

Difficulty: Very easy (0)

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

Difficulty: Harder (0)

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

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)