Sudoku @ sz.dk

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

Estimated difficulty: 16.7 (<8: low, >45: high)