Girl, 6, solves Rubik's Cube in 41.56 seconds Xeni Jardin 12:31 pm Mon, Sep 12, 2016 Wait for the amazing happiness at the end. Nicoleta Matei was the youngest competitor at the 2016 European Rubik’s Cube Championships. She is 6. In this video, she solves a 3×3 Rubik’s Cube in 41.56 seconds.