Sudoku @ sz.dk

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

Estimated difficulty: 10.7 (<8: low, >45: high)