9		1				8
	7			3				5
	2		6
					5		3
2				5			8
		8				1		3

Difficulty: Super easy (0)

				4	7		9	3
					6		7
7
		8				3
								6
	7		4
8	9		3	5

Difficulty: Very easy (0)

3	5				7
				9
4							9
					6
	9			7			4
			9
	2							3
				6
			3				7	6

Difficulty: Super easy (0)

6
					6	9	1
							2
						8
	7		3		2		6
		1
	6
	3	9	5
								9

Difficulty: Very easy (0)