Sudoku @ sz.dk

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

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