Very difficult sudoku - Page 546

Very difficult sudoku - random selection

Sudoku #45025

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

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

Sudoku #5378

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

Sudoku #37821

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

Sudoku #48417

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

List of very difficult sudoku - Page 546