Sudoku v.2.0.0

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Expert

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

Advanced

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

Very Hard

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

Hard

			7	6
		6	5					1

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

Moderate

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

Easy

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

Very Easy

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

7	8	9
4	5	6
1	2	3
	0