Sudoku @ sz.dk

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

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