6	3
	2					6
	6				1	3
				8			6
1			7
	4	3				2
	5					1
			1	5

Difficulty: Very easy (0)

4	2	7	1
			6	7
5	6	4
			7
				2
					6	5	8
			5	3
				5	2	7	4

Difficulty: Super easy (0)

					6
3	7					1
	1	2	5	8
	6					5	2
5	4					8
			6	5	1	2
	8					6	3
		7

Difficulty: Super easy (0)

			4			2
	7	1
5					6
				1	8	4
	8	7	5
		2					8
					7	1
	2			6

Difficulty: Very easy (0)