Fastest blindfolded individual to solve a 9 x 9 Sudoku puzzle orally The Book of World Record Holder

Dhruv Gupta from Delhi set this record.At age 14, he made a small working electric tractor model.It measured 5.41 ft by 2.3 ft and could plough, sow seeds, and irrigate.He used bike motors, wooden planks, and batteries.The record was confirmed on January 13, 2025.