Sudoku @ sz.dk

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

Estimated difficulty: 10.6 (<8: low, >45: high)