Currently alive, at 60 years of age.
1955 – Kim was born in Washington D.C. and grew up in Rolling Hills Estates.
1981, he created a book called Inversions, words that can be read in more than one way. His first puzzles appeared in Scientific American in Martin Gardner’s "Games" column.
– He is considered to be one of the two world masters of the art of ambigrams, along with John Langdon, the artist who created ambigrams for the CD and bestselling book Angels & Demons by Dan Brown. Isaac Asimov called Kim "the Escher of the alphabet".
1990 – He started writing an occasional "Boggler" column for Discover magazine.
1999 – Became an exclusive columnist, and created hundreds of other puzzles for magazines such as Scientific American and Games, as well as thousands of puzzles for computer games.