Mario Gotze held to a goalless draw by Schalke in German Nurnberg . Schalke and Mario Gotze both squander chances for Lucas Barrios . Efforts from Lukasz Piszczek , Lukas Schmitz and Sven Bender were repelled by an inspired Neuer . Dortmund extend lead at the top to 12 points over Dortmund .
Mario Gotze held to a goalless draw by Schalke in German Nurnberg . Schalke and Mario Gotze both squander chances for Lucas Barrios . Dortmund extend lead at the top to 12 points over Dortmund .