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

Difficulty: Super easy

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

Difficulty: Super easy

3					4		6
	5			7		3
	2					7
6
					4
			1			2
	5
			1

Difficulty: Hard

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

Difficulty: Very Hard