The Associated Press

The Bruins' Glen Murray, right, celebrates with Mike Knuble after scoring the winning goal. (AP photo)

MONTREAL - Glen Murray took advantage of Alex Kovalev's mistake to score on a breakaway 9:27 into the second overtime Tuesday, giving the Boston Bruins a 4-3 victory over the Montreal Canadiens. 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 collided with teammate Sheldon Souray in the neutral zone. Kovalev was shaking his hand after appearing to be slashed on the glove and lost sight of the puck - and Souray and Murray.

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.

Predators 3, Red Wings 0

NASHVILLE, Tenn. - Tomas Vokoun continued his suffocating play by stopping 41 shots and shutting out Detroit as Nashville evened the first-round series 2-2.

Steve Sullivan, Vladimir Orszagh and Greg Johnson each scored and Dan Hamhuis had two assists. The six-year franchise ensured a return visit to Music City for Game 6 Saturday against the 10-time Stanley Cup winners. Game 5 will be in Detroit on Thursday.

"It's great. I was happy, and you want to stay down to earth," Vokoun said. "It's 2-2, and I wish that was a 40 (save) shutout in Game 7 and we won and you could enjoy it more. I'm going to enjoy it. It's great. There's not much better you can do."

Nobody scored more goals in the regular season than the Red Wings in winning the Presidents' Trophy, but they haven't been able to crack Vokoun since the series shifted to Nashville.

The goalie stopped 41 shots in a 3-1 victory Sunday. Vokoun was better Tuesday night in his 13th career shutout - even with the Red Wings outshooting Nashville 41-20.

"I think he's got some kind of plexiglass behind him no one can see," Sullivan said.

Sharks 4, Blues 3

ST. LOUIS - Unsung Scott Thornton and Alexander Korolyuk each scored his first two goals of the playoffs. San Jose, the No. 2 seed in the Western Conference, has a 3-1 series lead and can close it out in Game 5 Thursday at home.

After losing the first two games, the Blues had a strong showing in Game 3, outshooting the Sharks 25-8 in the first two periods of a 4-1 victory. The Sharks regained control in the second period Tuesday, spending most of the period in the Blues' end and outshooting them 12-5 while scoring twice to snap a 1-1 tie.

Mike Danton, Pavol Demitra and Doug Weight scored for the Blues, who have rallied from a 3-1 series deficit twice in 12 tries in history - the last time in 1999.

Flames 4, Canucks 0

CALGARY, Alberta - Miikka Kiprusoff made 20 saves and Calgary used a scoring burst in the second period for a 4-0 victory over Vancouver to even the first-round playoff series Tuesday night.

The Flames, winning a home playoff game for the first time since 1995, scored two goals just 27 seconds apart in the second period. Their special teams, silenced for the first 22 power plays of the series, came alive with one short-handed goal and one with the man advantage.

It was Calgary's first win at home against the Canucks in 11 tries. The series resumes Thursday at Vancouver.

Stanley Cup playoffs

Tuesday's games

Nashville 3, Det. 0; series tied 2-2

Boston 4, Montreal 3, 2OT; Bruins lead series 3-1

San Jose 4, St. Louis 3; Sharks lead series 3-1

Vancouver at Calgary, late

Tonight's games

Philadelphia at New Jersey, 7 p.m.

Tampa Bay at Islanders, 7 p.m.

Toronto at Ottawa, 7 p.m.

Colorado at Dallas, 7:30 p.m.