Sudoku @ sz.dk

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

Estimated difficulty: 13.6 (<8: low, >45: high)