Sudoku @ sz.dk

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

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