Miroslav Satan had a goal and two assists for Boston, and Johnny Boychuk also scored for the Bruins, the No. 6 seed in the East that inherited home-ice advantage for the second round when the conference's top three teams were eliminated in the opening round.
It was 1-1 after one period and 2-2 after two. It stayed that way until Lucic got the puck between the circles, turned around and slapped a shot past Boucher. It was Lucic's first goal of the playoffs, his first in nine games and just his second in 18 games, dating to March 25.
The Flyers pulled Boucher in the final minutes for an extra skater, but the best scoring chance was a shot by Boston that was picked off the post by Philadelphia defenseman Chris Pronger to keep it a one-goal game.
Boston has won seven in a row at home after winning just three of their last 17 in the regular season after the New Year's Day Winter Classic against the Flyers at Fenway Park.
The Bruins led by two goals three times in Game 1 on Saturday, but the Flyers tied it with 3:22 to force overtime. Marc Savard, who hadn't played in almost two months because of a concussion, scored the game-winner to give the Bruins the early lead in the series.
Boston came out intent on holding serve at home. The game started in chippy fashion, and both coaches were warned 18 seconds in when a scrum developed and the players pushed after the whistle.
The Bruins scored first for the second straight game when Boychuk beat Boucher at 5:12 of the first period.
This time, the Flyers came right back, tying it with 3:06 to play. The Bruins repeatedly failed to clear the zone, and Richards took advantage.
The Pittsburgh Penguins might feel more at home than the typical visitors to the Bell Centre for a playoff game against the Canadiens.
Owned by Montreal-born hockey legend Mario Lemieux, the Pittsburgh Penguins can expect a small share of local support when they take the ice for Game 3 of their Eastern Conference semifinal tonight with the series tied at 1-1. - AP