Acciari made it 2-0 at 2:20 of the second period, deflecting a sharp-angle shot from Drew O'Connor in between the legs of New York defenseman Scott Mayfield.
"That first power play, I think, three or four of those saves we could've had,” Mayfield said. “Some of the ones at the end, we just didn't get the bounces. One I think bounced off my skate, I think, in front and squeaked in. We just couldn't get that on the other end.”
Bolduc cut it to 2-1 with his first goal of the season at 13:51 of the third, scoring on a snap shot from the left face-off circle after Pittsburgh forward Vinnie Hinostroza sent a loose puck off Anders Lee's skate in front.
Eller scored an empty-net goal with 43 seconds left for the 3-1 final.
"We needed a strong month of December,” Eller said. “I felt like we had it in us. We needed to tighten up a little bit of holes in our game. But like I said, now it feels like we're finding our game as a team and our identity within the team.”
NOTES: Penguins forward Sidney Crosby was in the locker room for several minutes in the second period to receive stitches after taking a stick just under his left eye from Islanders forward Mathew Barzal at 6:03. … Mayfield had two hits and one shot on goal in 17:58 of ice time in his return after missing eight games with an upper-body injury. ... Cizikas had three shots on goal in 11:41 after missing a 5-1 win against the Washington Capitals on Friday because of an illness.