Sudoku @ sz.dk

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

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