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

Difficulty: Very easy (0)

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

Difficulty: Hard (0)

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

Difficulty: Super easy (0)

			2	10		7		4
7		5					2
				6	7
5	10				3	4
			8				3
		3				2
			5	8				10	6
				4	2
		4					7		3
	9		10		4	6

Difficulty: Very easy (0)