Sudoku @ sz.dk

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

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