New York, which has beaten Boston five straight times, outscored the Bruins 12-5 while sweeping the three-game season series.
Lundqvist stymied the Bruins on several outstanding chances and improved to 25-12-2 against Boston with a 1.93 goals-against average. He earned his 403rd NHL win, tying Grant Fuhr for 10th on the career list.
Brad Marchand scored his team-leading 29th goal for the Bruins to cut it to 2-1 at 12:56 of the third. David Backes just about extinguished any final hopes for Boston when he was whistled for goaltender interference with 2:22 remaining.
Buchnevich, called up from the minors earlier in the day, wristed a shot over goalie Tuukka Rask’s left shoulder to put the Rangers ahead. Lindberg scored 4:25 later to make it 2-0 at 9:35 of the third.
Marchand tipped in a pass from David Pastrnak.
Rask made 19 saves for Boston, which lost for the second time in nine games.
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