6		4	5
				6
		3
			6
	4
	3	6		1

Difficulty: Super easy (0)

5			4	1
		2
			6
	4	3			1

Difficulty: Very easy (0)

				4
	4
	5		4
		3		6
				2
	6

Difficulty: Very easy (0)

		1
	6		1
	3
				1
		3		2
			5

Difficulty: Very easy (0)