Sudoku @ sz.dk

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

Estimated difficulty: 16.8 (<8: low, >45: high)