Coming off their bye week, the Steelers flew to Arrowhead Stadium for a Week 12 Sunday night showdown with the Kansas City Chiefs.  Pittsburgh trailed early in the first quarter when Chiefs kicker Ryan Succop kicked a 41-yard field goal.  Pittsburgh would answer in the second quarter with a 21-yard field goal from kicker Shaun Suisham following a Chiefs goal-line stand. The Steelers struck again when quarterback Ben Roethlisberger threw a 2-yard touchdown pass to rookie tight end Weslye Saunders. Succop and Shuisham each made 49-yard field goals before the end of the half to make it 13-6. The third quarter was scoreless, but in the 4th quarter Kansas City pulled closer when Succop booted a 40-yarder. This pulled the Chiefs to within 13-9. However, Pittsburgh's defense held on to preserve the victory as cornerback Keenan Lewis sealed the deal with an interception late in the 4th quarter with 29 seconds remaining.. How many points did the Steelers win by?