Robin Lehner started Tuesday's game, his first action since suffering an upper-body injury on March 5.
Lehner got a rude welcome back, as Kuraly put the Bruins ahead 1-0 at 1:12 of the first period, snapping a shot off the goalie's glove and in. That said, Lehner kept it a 1-0 game in a first period that saw the Isles get outshot 14-2.
Matt Martin tried to inspire the Islanders by challenging Zdeno Chara to a fight off the opening draw in the second period, but the galvanizing didn't yield the intended results. Cal Clutterbuck overskated a puck in the Isles end and Noel Acciari snapped it through Lehner's five-hole to make it 2-0 at 2:52. Kuraly netted his second of the game at 16:17 of the second period, knocking home Danton Heinen's backdoor feed after some work by the Bruins below the goal line.
"We've just got to be ready to go from the get go," captain Anders Lee said. "They played a playoff type of game tonight. They were heavy. They were strong. We were making mistakes form the start. Fumbling here and fumbling there with the puck. They capitalized off of those opportunities."
Down 3-0 entering the third, Patrice Bergeron scored off the rush at 6:32 to make it 4-0, while Jake DeBrusk's breakaway rip made it 5-0 at 10:20. After the game, the Islanders said all they can do is turn the page.
"All in all it was a frustrating night from start to finish," Martin said. "None of us played well. I think you kind scrap it. Remember it, but scrap it."