Sudoku @ sz.dk

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

Estimated difficulty: 7.6 (<8: low, >45: high)