1280px-Schach-Weltmeister_Ruslan_Ponomarjow_aus_der_Ukraine_(3858893295)
Ukrainian grandmaster Ruslan Olehovych Ponomariov playing simultaneous chess against 25 challengers in the Zürich central train station.
Photo: Jürg Vollmer (cc) wikimedia.org
November 8, 2019 - Daniel Gleichgewicht