Sudoku @ sz.dk

Max. level of difficulty


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

Estimated difficulty: 19.8 (<8: low, >45: high)