MONTREAL (AP) _ Glen Murray took advantage of his good fortune and made a goat out of Montreal's Alex Kovalev.
Boston, which took a 3-1 series lead, tied it when Mike Knuble scored with 30.7 seconds remaining in regulation.
Murray beat goalie Jose Theodore with a wrist shot after Montreal's Kovalev _ who scored his third goal in two games in regulation _ collided with teammate Sheldon Souray in the neutral zone.
``The puck was just laying there for me,'' Murray said.
Kovalev was shaking his hand after appearing to be slashed on the glove by Travis Green and lost sight of the puck _ and Souray and Murray.
``There's nothing you can say about that,'' said Kovalev, whose right hand was wrapped in a bag of ice. ``We ended up in the middle of the ice and Sheldon ended up losing the puck.''
Canadiens coach Claude Julien felt Kovalev made a bad decision.
``I think that when the referees don't call a penalty on a play, you can't stop playing,'' Julien said. ``They decided not to call it and then they collided. Murray got the breakaway and he doesn't miss many of those.
``It's a crappy way to lose a game''
Souray also felt Kovalev should have been more concerned about playing the puck.
``It's crazy,'' Souray said. ``I was just caught by surprise that he left the puck there and there was no one behind me. It's frustrating that it happened right now, in a game that was so important.''
Green wasn't surprised no penalty was called on the play.
``If I double-handed slashed him, I'm sure his arm would be broken,'' Green said.
Bruins goalie Andrew Raycroft made 42 saves. Theodore stopped 40 shots.
Michael Nylander and Jiri Slegr also scored for Boston, which won its second overtime game of the series. Bruins rookie Patrice Bergeron scored 1:26 into overtime Friday to give Boston a 2-1 home win, its second straight to open the first-round series.
``Whoever comes out of this game with a win has a lot of momentum going with them,'' Raycroft said. ``To close out and get a split here in Montreal was huge for us.''
The Bruins can end the series with a win in Game 5 Thursday in Boston.
Knuble tied the game in the final minute of the third period, though he had to wait several anxious moments for a video review to award the goal.
Knuble put a backhander past Theodore's left pad from the edge of the crease, though play continued for another eight seconds.
Play was stopped with 22.1 seconds remaining and video replay officials reviewed the play. The replay showed Knuble put the puck just across the goal line inside the left post before it quickly rebounded out of the net.
``It was a hope and a prayer,'' Knuble said.
The Bruins' bench erupted in cheers and the sellout Bell Centre crowd of 21,273 moaned its disappointment when referee Mick McGeough pointed to center ice to signal the goal. The clock was reset to 30.7 seconds remaining.
Mike Ribeiro scored twice and Kovalev had his third goal in two games for Montreal, which scored just once while losing the first two games in Boston.
Ribeiro, who many Bruins accused of faking an injury late in Montreal's 3-2 win in Game 3, found a much better way to get under their skin. He scored his first career playoff goal 4:41 in before the Bruins could lay a hand on him. By the time Boston forward Brian Rolston knocked him to the ice, Ribeiro had already deflected a bouncing puck backward past Raycroft's right leg and inside the left post.
He got his second of the game early in the second period to put Montreal up 3-1. Kovalev had given the Canadiens a 2-1 edge with 4.9 seconds remaining in the first period.
Ribeiro, who didn't practice Monday, writhed in pain on the ice with less than a minute remaining in Sunday's game after what appeared to be an innocuous collision with Knuble. He remained on the Canadiens' bench through the end of that game and smiled while trading barbs with the Bruins, drawing the visitors' ire.
Nylander returned and scored his third goal of the series in the first period. Nylander, who has five points in three games, missed Game 3 because of flu-like symptoms.
Slegr drew Boston within 3-2 when his shot deflected off Montreal defenseman Francis Bouillon's skate and past Theodore midway in the second period.
|Mike Ribeiro (1) ASST: Michael Ryder (1), Pierre Dagenais (1)|
1 - 0 MTL
|Michael Nylander (3) ASST: Sergei Samsonov (5), Nick Boynton (1)|
1 - 1 Tie
|Alex Kovalev (3) ASST: Jan Bulis (1), Jim Dowd (1)|
2 - 1 MTL
|Mike Ribeiro (2) ASST: Jason Ward (1)|
3 - 1 MTL
|Jiri Slegr (1) ASST: NONE|
3 - 2 MTL
|Mike Knuble (2) ASST: Glen Murray (1), Sergei Gonchar (2)|
3 - 3 Tie
|1st OT Period|
|2nd OT Period|
|Glen Murray (1) ASST: NONE|
4 - 3 BOS
|Power Play %||17.8%||16.5%|
|% on Road||14.7%||10.7%|
|% at Home||21.2%||22.1%|
|Richard Zednik Hi-sticking against Hal Gill|
|Pierre Dagenais Roughing against Martin Lapointe|
|Hal Gill Hooking against Stephane Quintal|
|Patrice Brisebois Slashing against P.J. Axelsson|
|Pierre Dagenais Unsportsmanlike conduct against Martin Lapointe|
|Sheldon Souray Roughing against Travis Green|
|Martin Lapointe Unsportsmanlike conduct against Pierre Dagenais|
|Travis Green Roughing against Sheldon Souray|
|Joe Thornton Slashing against Saku Koivu|
|Saku Koivu Slashing against Joe Thornton|
|Martin Lapointe Holding - Obstruction against Alex Kovalev|
|Travis Green Hi-sticking against Andrei Markov|
|Alex Kovalev Boarding against Joe Thornton|
|1st OT Period|
|2nd OT Period|
|Glen Murray Holding against Alex Kovalev|