Sudoku @ sz.dk

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

Estimated difficulty: 4.1 (<8: low, >45: high)