Sudoku @ sz.dk

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

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