Sudoku @ sz.dk

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

Estimated difficulty: 4.5 (<8: low, >45: high)