5		3					6
3		2					9
			1			5
			7		2
		5			4
	3					8		9
6					1		5

Difficulty: Super easy (0)

2			4				7
		1			8
8
				3			5
7								8
	8			7
								9
			3			5
	3				7			6

Difficulty: Super easy (0)

				2
9			3				5
	4	1
			2	3			8
	5						1
	8			9	1
						9	4
	1				3			8
				8

Difficulty: Very easy (0)

					3		6	8
1						5
			7
						7
2								9
		6
					8
		7						5
4	5		3

Difficulty: Very easy (0)