Sudoku by Froggy

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

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