Sudoku @ sz.dk

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

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