Blackhawks 6, Senators 5: Captain Jonathan Toews completed his third career regular-season hat trick by scoring to snap a tie midway into the third period as host Chicago rallied past Ottawa.Andrew Shaw scored twice, including a power-play goal in the first period to extend his team's streak to six consecutive games with a man-advantage tally. Corey Crawford turned aside 14 shots in relief of Nikolai Khabibulin (18 saves) and former Senator Marian Hossa notched his 100th career goal with the Blackhawks, who have won six of their last seven versus Ottawa.Milan Michalek and Kyle Turris each scored and set up a goal and Mika Zibanejad and defenseman Joe Corvo also tallied for the Senators. Clarke MacArthur notched a pair of assists for Ottawa, which dropped four of its last five games overall and fell to 2-6-1 against the Western Conference this season.After Corvo and Zibanejad scored 55 seconds apart to give the Senators a 4-2 lead and send Khabibulin to the showers, Toews trimmed the deficit by netting a wraparound with 5 1/2 minutes remaining in the middle period. The captain tallied again after skating toward the net and steering a brilliant pass from defenseman Johnny Oduya past Craig Anderson (34 saves) at 1:20 of the third period before capping the hat trick nearly eight minutes later after cleaning up a rebound following blue-liner Brent Seabrook's bid from the slot.Shaw provided much-needed insurance with 5:50 remaining in the third to extend Chicago's lead to 6-4 before Zack Smith answered 13 seconds later.GAME NOTEBOOK: Toews has enjoyed four hat tricks during his career - with one coming in the postseason. ... Chicago will visit the White House on Monday to celebrate its second Stanley Cup championship in four seasons. ... Ottawa captain Jason Spezza was rejoined by RW Bobby Ryan on the team's top line. Coach Paul MacLean had opted to separate the two in an attempt to generate more offense, but the club mustered just three goals in the previous two games.