5
6		4			2
3
					3
1			6		4
			4

Difficulty: Easy (0)

				4
			1	5
	2
				3
	6	5
	4

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)