India, May 10 -- Brain teasers have long been a favourite pastime for social media users, offering a quick yet satisfying mental challenge. Whether it's cracking an age-related riddle, solving a clever maths problem or decoding a visual illusion, these puzzles regularly capture the attention of users. Recently, an optical illusion shared on Facebook has once again left users scratching their heads.

(Also read: Only a true genius with sharp reasoning skills can crack this mind-bending brain teaser)

Posted by Facebook user Arshdeep Soni, the image in question features a three-dimensional arrangement of blocks on an orange background. The blocks are stacked in a stair-like formation, prompting viewers to figure out how many there actually ...