The Islanders wound up chasing the game for the most of the night on Thursday, falling behind 1:54 of the first period, as Zach Aston-Reese deflected a Letang point shot past Varlamov.
The quick strike gave the Penguins some early momentum, hemming the Islanders in their own end and stifling them in the neutral zone. The Islanders started to hit their stride in the second half of the period, generating a series of chances including a Barzal backhander off the rush, a pair of Ryan Pulock shots blocked in tight by Evgeni Malkin and a deflection off Jarry's toe.
The Islanders tied the score for the first time midway through the second period, as Mayfield corralled a pass from Barzal and toe dragged a sliding Aston-Reese before snapping a wrister high-glove side on Jarry at 11:03.
In a foreshadowing moment, the tie game didn't last long, as Carter put the Penguins back on top 2-1 at 13:33, beating Varlamov far side off the rush for his second goal of the series. Jason Zucker made it 3-1 before the end of the period, picking up a loose puck in the slot, making a quick outside-in move on Mayfield before snapping it high on Varlamov at 18:03.
The Islanders have only led for 3:43 of the first 196:30 of the series, so getting ahead of the Penguins will be a priority for Game 4. That said, the Islanders liked aspects of their game, namely scoring four goals, and are taking the positives out of Game 3.
"That's the way we want to play and that's the way our team is built," Cizikas said. "That's the way we have to play and you see how effective it is, how well we sustain pressure, get chances in the ozone and keep them on their heels. Moving forward, we can take away the positives from this one moving into next game."