Japanese scientists have developed a robot that can win at rock-paper-scissors every time against a human opponent.
The Janken robot - named after the game's name in Japan - completes its chosenshape using high-speed recognition and reaction to the human hand.
Rather than following the rules of rock-paper-scissors, the machine technically cheats by reacting to its opponent rather than making a premeditated simultaneous action.
Janken takes just one millisecond - a thousandth of a second - to recognise what shape the human hand is making.
The 7th UK Rock, Paper, Scissors Championship is takes place on 23 November at The Knights Templar pub on Chancery Lane London. Registration is £14.50 with the top prize being£100.