Montreal, now up 2-1 in the series, earned their third comeback win of the playoffs. It's the first time they reached that amount in a single postseason since 2015.
Rookie goaltender Jakub Dobes stayed hot after a 26-save night. He now has 54 saves over the last two games and has only allowed more than two goals once in the Habs' last six games these playoffs.
Game 4 is scheduled for Tuesday, May 12th, when the Sabres will try to tie the series up 2-2.
The Habs are 11-6 all-time when they lead a playoff series 2-1 after starting on the road, while the Sabres are 0-3 all-time when starting as the home team trailing 2-1.
Recap & Highlights
Even though the final score may not show it, the Sabres were the ones who got on the board first, and it didn't even take a full minute.
Tage Thompson scored his third goal of the playoffs to put Buffalo up 1-0 just 53 seconds after puck-drop. Rasmus Dahlin, who would go on to score the Sabres' second goal of the game, picked up his fourth assist.
It was the second-fastest starting goal of the playoffs, falling short of Edmonton's Kasperi Kapanen, who scored in 38 seconds during Game 4 of their first-round matchup against the Anaheim Ducks.
From there on, the Canadiens would score four straight goals, two on the power play.
It started with Alex Newhook's fourth goal of the playoffs with just under five minutes left in the first period to make it a 1-1 game.
Neither team converted on the 4-on-4 opportunity in the first period, nor any of their power plays.
But it was in the second period when things got out of hand for the Sabres, and the Habs completely took over.
Cole Caufield took advantage of the first power play of the period and scored his second goal of the playoffs to put the Habs up 2-1. Lane Hutson (6) and Ivan Demidov (3) picked up the assist.
Hutson joined P.K. Subban (2014) as the only two Canadiens defensemen of the past 30 years to record at least eight points in their first 10 playoff games.
It was a spark that turned into a fire as the Habs completely took the game into their hands for the rest of the second period.
Zachary Bolduc also scored his second goal of the playoffs to put the Habs up 3-1, with assists from Joe Veleno (1) and Alexandre Carrier (2).
Then, the Sabres would gift the Habs another golden opportunity, and they made sure to capitalize on it...
Buffalo's Beck Malenstyn and Jordan Greenway both caught two-minute minors, along with Montreal's Bolduc, to give the Habs another power play.
After 45 seconds into the power play, Juraj Slafkovsky scored his fourth of the playoffs to give the Habs a commanding 4-1 lead, with assists from Hutson (7) and Caufield (4).
Slafkosvky stamped his name into Canadiens history as he joined Dickie Moore (1958) as the only two players to record each of their first four goals in a singular postseason on the power play.
With his second assist of the game, Hutson tied Mathieu Schneider for the most multi-point playoff games in franchise history before turning 23.
After not letting up more than two goals in his first five starts these playoffs, which includes Game 1 against Montreal, Buffalo goaltender Alex Lyon has now let up at least four in back-to-back games.
Buffalo would find the net again to cut the lead in half just two minutes later on a power play of their own.
Dahlin scored his second of the playoffs, with Thompson (6) and Josh Doan (5) recording the assists, to make it 4-2.
It was their first goal on the last 30 power play opportunities on the road. But Buffalo needed a lot more as the Habs outshot them a whopping 29-18 heading into the third period.
After almost nine minutes of play into the third, Montreal kept pouring it on in front of their home crowd.
Kirby Dach, who picked up the penalty that led to Dahlin's goal in the second, scored his fourth of the playoffs to give the Habs a 5-2 lead.
Alexandre Texier and Phillip Danault both picked up their third assist.
Newhook continued to remain hot after scoring only 13 goals in the regular season.
He brought his playoff total up to five with his second of the game on a breakaway empty-netter that would've been a penalty shot had Buffalo not pulled Lyon from the net.
In the waning minutes, both teams were assessed game misconducts after a massive scrum that involved everyone on the ice except the goalies.
The Habs cruised their way to a 6-2 win in the end, dominating across the entire stat board in shots (36-28), face-off percentage (62.3%-37.7%), power play (2/6-1/4) percentage, and hits (24-19)