Sudoku @ sz.dk

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

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