Emma Stone is channeling her inner Bobby Fischer and playing an intense game of chess ... with a purple stuffed koala bear.
The epic battle went down recently on the set of the upcoming Netflix series, "Maniac."
The actress is reuniting with her former "Superbad" co-star Jonah Hill for the dark comedy. "Maniac" is about a psychiatric patient who is living the good life inside his own mind.
The show streams in 2018.