In the visual illusion, we get to witness a sea of the letter ‘o’. All that people are required to do is find a ‘0’ (zero) ...

Test your mind with a fun optical illusion! Hidden among a sea of 'o's is a sneaky '0'. Spotting it reveals whether you're ...

NPR's Ayesha Rascoe plays the puzzle with KUER listener Elisabeth Larsen and Weekend Edition Puzzlemaster Will Shortz.