Sudoku @ sz.dk

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

Estimated difficulty: 22.8 (<8: low, >45: high)