Arsene Wenger’s side, who have now won four of their last five league and cup games, had most of the first-half possession but it was Leicester who carved out the best early chances, Jamie Vardy firing a first-time shot into the side-netting and then Riyad Mahrez forcing a superb save from Petr Cech.
Kasper Schmeichel had to save smartly from Theo Walcott before Alexis Sanchez rattled the Leicester bar, and Granit Xhaka went close after the break with a deflected shot that Schmeichel just reached.
But it was another deflected effort — by Nacho Monreal, in the 86th minute, that deflected off Robert Huth — that finally undid Leicester and earned Arsenal the three vital points.
The result left Arsenal four points short of that crucial fourth Champions League spot. Leicester are six points above the relegation places, just 12 months after they won the league.
