Riyad Mahrez fired Leicester to the brink of the Champions League knockout stages after a 1-0 victory over FC Copenhagen.
The winger grabbed the winner to maintain the Foxes' 100 per cent record in Europe and keep them top of Group G.
They are five points clear of Porto, the 2004 winners, and five and nine points ahead of FC Copenhagen and Club Brugge respectively with three matches remaining.
Victory in Copenhagen in two weeks would put the Foxes through to the last 16 but they needed Kasper Schmeichel, who is yet to concede a goal in the competition, to produce an outstanding late save to thwart Andreas Cornelius.