Chinmay Prabhu, a 20-year-old from Mumbai, made it to Guinness Book of World Records by solving the pyramid-shaped Rubik's cube under water. He achieved this in just 1 min 48 secs on Dec 9 last year & received the certificate on Mar 15 this year. He likes cubing & swimming, so he thought to mix the two & create a new one. He teaches cubing to others during the weekend. IN 2017, he made it to the Limca Book of Records.