Sudoku @ sz.dk

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

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