3			4
	6			3
	4			2
		1			2

Difficulty: Super easy (0)

	1		5	2
	5
				6
	6	1		4

Difficulty: Very easy (0)

					6
			2		3
6
					1
2		5
4

Difficulty: Very easy (0)

			3	2
				6
				5
	2
	1
	3	6

Difficulty: Very easy (0)