Sudoku @ sz.dk

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

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