Sudoku @ sz.dk

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

Estimated difficulty: 7.5 (<8: low, >45: high)