BOSTON (AP) — Mathew Barzal scored one power-play goal and assisted on another, and Semyon Varlamov stopped 40 shots to give the New York Islanders a 5-4 victory over the Boston Bruins and a 3-2 lead in their second-round playoff series. The Islanders have won two in a row to take their first lead in the series. They can advance to the Stanley Cup semifinals in Game 6 at home Wednesday. Kyle Palmieri, Josh Bailey and Jordan Eberle all scored in the second period, when the Islanders opened a 4-2 lead. Brock Nelson made it 5-2 just two minutes into the third after Jeremy Swayman replaced Tuukka Rask in the Bruins goal.