Sudoku @ sz.dk

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

Estimated difficulty: 7.6 (<8: low, >45: high)