Inter have the chance to move six points clear at the top of Serie A by beating Parma away on Thursday after second-placed AC Milan were held 1-1 at home by Udinese on Wednesday.
Stefano Pioli's side was staring at defeat after Rodrigo Becao put Udinese ahead but they managed to grab a point thanks to a Frank Kessie penalty seven minutes into stoppage time.
Milan have 53 points from 25 games.
Third-placed Juventus have 49 points, and a game in hand, after thumping Spezia 3-0 on Tuesday.
Atalanta pulled level on points with the reigning champions by thrashing bottom side Crotone 5-1 in Bergamo on Wednesday.
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