Sudoku @ sz.dk

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

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