5
1
			6	3
	6	1
					2
			3

Difficulty: Very easy (0)

	3		1
					5
				2
	4
4
		6		5

Difficulty: Easy (0)

	1
	6	2
3
					4
			5	2
				3

Difficulty: Very easy (0)

			3	4
		3		1
	6		4
	5	6

Difficulty: Very easy (0)