1			2
	2				4
					6
5
1				3
	4			1

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)