Sudoku @ sz.dk

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

Estimated difficulty: 13.7 (<8: low, >45: high)