India, Sept. 17 -- Optical illusion challenges often capture people's attention because they test patience, focus, and perception. These puzzles go viral on social media platforms as users compete to solve them in record time, sharing answers and reactions with the community. One challenge, going viral on Reddit, is bound to test players to the limit.

The optical illusion challenge, shared on Reddit's FindTheSniper community, asks participants to spot a house key hidden among hundreds of scattered rocks. The post, rated as "medium difficulty," challenges participants to find the key in just 15 seconds.

Today's optical illusion challenge is difficult because the key blends in with the rocks around it. Its color and thin outline are almos...