Sudoku @ sz.dk

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

Estimated difficulty: 13.7 (<8: low, >45: high)