Australia set Pakistan 490 for victory

Peter Handscomb was unbeaten on 35 and wicketkeeper Matthew Wade on one before Smith's declaration.

Pakistan's batsmen face a stiff task to keep their wickets in the evening session with the pink ball at its most devilish.

Pakistan were bowled out for 142 before tea, 287 runs short of Australia's first innings 429.

(Reporting by Ian Ransom in Melbourne; Editing by Sudipto Ganguly)