BOSTON — Brent Seabrook’s goal 9:51 into overtime lifted the Chicago Blackhawks to a wild 6-5 victory over the Boston Bruins on Wednesday night and tied the Stanley Cup finals through four games.

Seabrook fired a 45-foot shot past Bruins goalie Tuukka Rask to end Game 4 and send the series back to Chicago tied 2-2. Seabrook also scored the overtime goal in Game 7 of the Western Conference semifinals to eliminate the Detroit Red Wings.

Game 5 of the best-of-seven series is Saturday night.

It was the third overtime game of the series. The Blackhawks won the opener 4-3 in three overtimes, and the Bruins won 2-1 in the first overtime period in Game 2.

Boston grabbed the series lead Monday night 2-0 behind Rask’s third shutout of the postseason.