Sudoku @ sz.dk

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

Estimated difficulty: 10.7 (<8: low, >45: high)