Sudoku @ sz.dk

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

Estimated difficulty: 7.4 (<8: low, >45: high)