On 30 Dec 2021, 8-year-old Kao Zi Yao solved a single 15-Puzzle in 8.85 sec. On 3 Jun 2022, he managed to solve ten 15-Puzzles in 1 min 51.33 sec. The feat at Youclass Learning Centre was an attempt to break the world record but he narrowly missed the timing. Nevertheless it was still the fastest ever seen in Singapore.
