Sudoku @ sz.dk

Max. level of difficulty


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

Estimated difficulty: 4.4 (<8: low, >45: high)