Sudoku @ sz.dk

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

Estimated difficulty: 7.5 (<8: low, >45: high)