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

Difficulty: Super easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Very easy (0)

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

Difficulty: Super easy (0)