Sudoku @ sz.dk

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

Estimated difficulty: 10.7 (<8: low, >45: high)