"Obviously a lot of guys in this room are used to winning, and no one like losing," Blackhawks forward Nick Schmaltz said. "To get that good feeling in the locker room and get a win for our goaltender who really played well tonight, it's good to see that, and especially to get another win on home ice. We're trying to get better and better at home here."
WATCH: [All Senators vs. Blackhawks highlights]
Chicago is 14-14-3 at United Center.
Patrick Kane had a goal and an assist, and Artem Anisimov scored for the Blackhawks (26-27-8), who won for the second time in three games after losing eight in a row (0-7-1). Chicago trails the Minnesota Wild by 11 points for the second wild card into the Stanley Cup Playoffs from the Western Conference.
"We need every point we can get at this point," Kane said. "There's still belief in this locker room. Obviously we need to go on quite a run and have a big record down the stretch, but we'll take it one game at a time. Nice to get two points."
Zack Smith and Matt Duchene scored, and Mike Condon made 36 saves for the Senators (21-28-10), who trail the Columbus Blue Jackets by 13 points for the second wild card from the Eastern Conference.
"We definitely could have come up with the win," Senators coach Guy Boucher said. "So it's a hard-fought game. I like the way we battled back, we came back twice. It's a very good night. Our players played good. Second, third and overtime was great, and I think we've just got to keep that up."