Sudoku @ sz.dk

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

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