Reilly Smith wristed one past a screened Price with less than 3 minutes gone in the third period to make it a one-goal game. Shortly after another unsuccessful power play, Milan Lucic muscled his way through the defense and passed it to Torey Krug for a slap shot that went past Price’s left skate.
Bouillon gave Montreal the lead again, finishing off a scramble in front of the net. But with 2 minutes left, the Bruins won a faceoff in the Canadiens’ end, kept the puck in and then worked it around to Boychuk, who slapped it past Price to send the game into overtime.
Montreal took a 2-0 lead after two periods on a first-period power-play goal by Subban and Bourque’s score 3:36 into the second. Bourque had three goals in Montreal’s first-round sweep of Tampa Bay, but it was his first point in nine career playoff games against the Bruins.
Notes: Montreal won 24 of the previous 33 playoff series, but the Bruins have won seven of the last 11 and two in a row. In 2011, on their way to the Stanley Cup championship, Boston beat Montreal in seven games in the first round after losing the first two at home. ... Montreal won three of four in the regular season. ... Lars Eller has a point in all five Montreal playoff games so far.