Sudoku @ sz.dk

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

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