The Chicago Blackhawks talked prior to Sunday night’s game about the challenge that is the Edmonton Oilers. Forget the Oilers’ record: Once they face the Blackhawks, it rarely seems to matter. And it was close to not mattering again on Sunday. But the Blackhawks, who are on an offensive surge right now, tapped into that to fend off the Western Canadian thorn in their side. Brandon Saad had a goal and an assist, and Duncan Keith’s first goal of the season proved to be the game-winner as the Blackhawks beat the Oilers, 5-4, at the United Center. It was another tough one against Edmonton, which, as coach Joel Quenneville put it, is “a team that enjoys playing us and has had some success.” But the Blackhawks, who have been finding their offensive on a regular basis lately, found more of it on Sunday. “We’re just sticking with our game,” said Bryan Bickell, who scored his fifth of the season early in the third. “The first couple of periods we were frustrated. We were OK, but we had another level. In the third period, we picked it up. We’re happy to get the two points. I know these guys have a great track record against us.” Quenneville concurred. “I know one thing: They get excited playing our team,” he said of the Oilers. “Everyone gets on the scoresheet. We’ve had some real tough nights. At the end of the day we want to win, but we want to play the right way. Sometimes we get away (from) how we traditionally play.” Indeed, the Oilers seem to turn into bulls eyeing a red cape whenever they face the Blackhawks. Their power play got the best of the Blackhawks tonight, going 2-for-2 and giving them life and a 3-3 tie in the third period. But it was the Blackhawks’ own power play that proved to be the difference, when Keith’s long-distance shot got through Devan Dubnyk for the eventual game-winner.