Sudoku @ sz.dk

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

Estimated difficulty: 13.7 (<8: low, >45: high)