Sudoku @ sz.dk

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

Estimated difficulty: 7.5 (<8: low, >45: high)