Sudoku @ sz.dk

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

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