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Montreal’s Lars Eller (81) gets the Canadiens off to a fast start, beating Boston goalie Tuukka Rask, top left, as Bruins defenseman Torey Krug, right, skates near during the first period of an NHL hockey second-round playoff series on Monday in Montreal.

MONTREAL (AP) -- Max Pacioretty had a goal and an assist in the second period and Carey Price made 26 saves and the Montreal Canadiens blanked the Boston Bruins 4-0 on Monday night to force Game 7 in their Eastern Conference semifinal series.

The series is tied 3-3 going into Game 7 on Wednesday night in Boston.

Pacioretty, who had only one assist in the first five games, scored and set up Thomas Vanek's goal in the second period. Lars Eller scored in the first for Montreal and Vanek added his second of the game into an empty net with 3:56 left.

Rookie Nathan Beaulieu, the Canadiens' 2011 first-round draft pick who was given a surprise start by coach Michel Therrien, picked up an assist in his first NHL playoff game and was plus-2.

The Canadiens repeated the scenario of their 2011 first-round series against the Bruins, winning at home to force a Game 7. That year, they lost Game 7 in overtime. The Bruins went on to win the Stanley Cup.

Montreal got out to a strong start after a rousing pregame show and the teams played at a ferocious pace through the first two periods.

Despite having the best of the play in the opening 20 minutes, the Canadiens needed an unusual play for the only goal.

Kevan Miller lost the puck off his stick behind the Boston net and then inadvertently tripped goalie Tuukka Rask as he tried to smother it, leaving Eller free to score unassisted 2:11 into the game.

The second period was marked by a remarkable 5:11 stretch without a whistle in which the Bruins bottled the Canadiens in their end for minutes at a time, only to see Milan Lucic miss their best scoring chance from the edge of the crease.

Soon after, Beaulieu flipped the puck up the center of the ice and saw it go off Loui Eriksson to Pacioretty, who won a race with Zdeno Chara and beat Rask between the pads at 15:24.

Pacioretty kept a puck alive with his feet amid a crowd in front of Rask during a power play and saw the puck slide to Vanek for a shot into an open side at 17:39.

The Bruins came close at 11:05 of the third when a Chara shot went off Price and dropped behind him.

But with Jarome Iginla digging in the crease, David Desharnais was on his knees to stop the puck with his stick just as it had almost crossed the goal line. The no-goal call stood up to video review.

Notes: Beaulieu replaced Douglas Murray on Montreal's third defense pair and Daniel Briere returned to the lineup for Travis Moen. ... Eller scored during Beaulieu's first career NHL playoff shift, making him plus-1 only 2:11 into the game. ... Boston made no changes. ... Shawn Thornton played his 100th career playoff game.