idnr: 5648

		3			2
		1


			5
6			2

Difficulty: Very easy (0)

idnr: 6011

	1		3
				5	4


2	4
		5		4

Difficulty: Very hard (0)

idnr: 6889

5	6		3

1
					5

		5		1	4

Difficulty: Very easy (0)

idnr: 5166

				2
			4
5			1
		4			6
		5
	1

Difficulty: Easy (0)