Sudoku @ sz.dk

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

Estimated difficulty: 10.6 (<8: low, >45: high)