On 29th February, over a thousand schools across the globe will race to unravel a real-life mystery that has long captivated the art world. Education startup Forensic Outreach and New York-based edu-retailer Ward’s Science have prepared a worldwide STEAM (Science, technology, engineering, Art and Mathematics) competition inspired by the 2011 hunt for the lost Leonardo da Vinci painting The Battle of Anghiari. The competition involves three subject-specific challenges: ‘cryptanalysis’, ‘geometry and probability’ and ‘materials science’.