Boston Bruins' goalie Tuukka Rask (L) of Finland watches the puck carom from the net on a shot by Chicago Blackhawks right-wing Patrick Kane (not shown) during the second period in Game 4 of the NHL hockey Stanley Cup Finals in Boston Wednesday. — AP BOSTON — The Chicago Blackhawks kept taking the lead until there were no more chances for Boston to come back, beating the Bruins 6-5 in overtime Wednesday to tie the Stanley Cup Finals at 2-2. Brent Seabrook's slap shot beat Boston goalie Tuukka Rask with 9:51 gone in overtime, capping a performance in which Chicago finally regained its scoring touch. Game 5 of the best-of-seven series will be in Chicago Saturday, with Game 6 back in Boston Monday. Patrick Kane had a goal and an assist for the Blackhawks, who had only scored five goals total in the first three games of the series and hadn't put the puck past Rask in more than 129 minutes coming into Game 4. Bryan Bickell and Michal Rozsival had two assists apiece, and Corey Crawford made 28 saves for Chicago. Patrice Bergeron scored twice, and Zdeno Chara and Jaromir Jagr each had two assists for Boston, which had won 11 of its previous 13 playoff games. Rask made 41 saves but he was screened on the game-winner, which quickly quieted the building where Boston had earned a dominating, 2-0 victory two nights earlier. “One of things we have talked about, get pucks to the net,” said Seabrook, a defenseman who also had the overtime goal in Game 7 of the Western Conference semifinals. “I just tried getting it on net, we had a great screen in front. ... It just found a way.” It was the third overtime game in the finals, but the free-flowing spectacle bore little resemblance to the three tightly contested games that opened the series. The teams combined for five goals in the second period — as many as in Games 2 and 3 combined — as Chicago repeatedly sprinted into the lead only to have Boston come back and tie it. The Blackhawks led 1-0, 4-2 and 5-4, but each time the Bruins evened it up, the last just 55 seconds after Chicago took the lead when Johnny Boychuk slapped it over a sliding Johnny Oduya with 7:46 left in regulation. Boychuk, who had never scored more than five goals in a season, has six in the postseason. The overtime was even until the Bruins failed to clear the zone and the puck got to Seabrook at the right point. What seemed like a harmless shot found the back of the net, and the Blackhawks followed with a subdued celebration at the end of another long night. “Both teams are so great defensively. Both have great goalies,” Seabrook said. “I don't know; it was one of those games. They got some goals on the power play, we got some bounces. It was nice to get some past Tuukka.” “I thought our guys battled hard enough to get us back in the game and create an overtime,” said Boston coach Claude Julien. “I don't think we played our best game tonight. It was certainly a tough outing for us tonight. They came out hard, played extremely well.” — Agencies