Sudoku @ sz.dk

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

Estimated difficulty: 13.7 (<8: low, >45: high)