Sudoku by Froggy

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

Estimated difficulty: 16.7 (<8: low, >45: high)