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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)