The Montreal Canadiens' improbable playoff run has reached a decisive seventh game for a second series in a row.

Michael Cammalleri scored his second goal of the game midway through the second period and Jaroslav Spacek netted the go-ahead tally 2:30 later for the host Canadiens, who forced a Game 7 in the Eastern Conference semifinals with a 4-3 victory over the Pittsburgh Penguins last night.

Maxim Lapierre also scored 11:03 into the third to give Montreal a 4-2 lead.

Bill Guerin deflected Sergei Gonchar's slap shot from the right point past Jaroslav Halak with 1:24 remaining to draw Pittsburgh within one. But the Canadiens held on to set up Game 7 in Pittsburgh tomorrow.

"For us, it's the reality," Cammalleri said. "If you pinch yourself, you're beat. I remember when you first come in the league if you start sitting around staring in awe and catching flies you'll be out pretty quick. Now we belong. We're having fun."

Halak stopped 34 shots for the eighth-seeded Canadiens, who came back to beat Washington in the first round after falling into a 3-1 series hole against the Presidents' Trophy-winning Capitals.

Penguins captain Sidney Crosby scored his first goal in seven games in the first period.

Crosby earned an assist for his 19th point in 12 games when Kris Letang scored for a second game in a row early in the second.

FLYERS 4, BRUINS 0

Michael Leighton came off the bench after Brian Boucher was injured and made 14 saves to complete the shutout, leading Philadelphia past host Boston, and helping the Flyers avoid elimination in Game 5 of the best-of-seven Eastern Conference semifinals.

Boucher left after injuring his knee at the bottom of a pileup in the crease at 4:35 of the second period. Leighton, who had been the starter before he was injured on March 16, made his first career playoff appearance and finished off the first combined shutout in the Flyers' postseason history.

Simon Gagne scored two goals, and Ville Leino had a goal and an assist to help the Flyers force the series back to Philadelphia tomorrow.