Memory Ark organised Singapore’s first 15-Puzzle competition on 25 Jul 2018 at Pollinate, Blk71 start-up hub. The sliding puzzle has 16 spaces in which 15 tiles have to be placed in the right order. After 3 rounds, Lim Jing Xuan emerged fastest to solve the puzzle in a time of 47 sec. 4-year-old Mason Chou was the youngest to solve the puzzle within 2 minutes. His time was 1 min 3 sec.