Mika Zibanejad scored at 14:22 of overtime to give the Rangers a 3-2 win over the Canadiens in Game Five of their first-round series in Montreal.
Jesper Fast scored shorthanded and Brady Skjei also scored for New York, which leads the series three-games-to-two.
Artturi Lehkonen and Brendan Gallagher had goals for Montreal.
New York hosts Game Six tomorrow.