Tonight, the Chicago Blackhawks will have an opportunity to do something the Bruins failed to accomplish in four attempts. End the Flyers’ season. With a 7-4 thumping of the Flyers at the United Center in Game 5 of the Stanley Cup finals Sunday, Chicago grabbed a 3-2 lead to set up tonight’s Game 6. One more win, and the Blackhawks will capture their first Cup since 1961. But as another Original Six team learned in most painful fashion, it’s not so easy to deliver the final boot to the Flyers.