Sudoku @ sz.dk

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

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