Two Sutton Coldfield CC members were paired against each other in the Coventry Rapidplay Open Section (Massey Ferguson Social Club) Sunday 8th December 2019: Marek Soszynski versus Golam Ali (in the red cap). [Picture by Hok Chiu.]
This is Professor Edward H. Adelson’s remarkable “Checker shadow illusion” of 1995 in which, despite appearances, the squares marked A and B are exactly the same shade of gray. [Image may be reproduced and distributed freely.]