New Delhi, Sept. 3 -- Dark matter is called dark because it cannot be seen. Scientists believe it must be there because nothing else adequately explains many of the things we observe in the universe. ... Read More
India, Aug. 31 -- In the very first edition of Problematics, which I published in a local newspaper in my hometown in 1993, the inaugural puzzle involved three variables and two equations to work with... Read More
India, Aug. 31 -- In the very first edition of Problematics, which I published in a local newspaper in my hometown in 1993, the inaugural puzzle involved three variables and two equations to work with... Read More
India, Aug. 3 -- Our main puzzle this week is an adaptation of an 11th-century Arabian original. Because readers have solved similar (if not identical) puzzles in these columns before, I have added so... Read More
India, July 27 -- As a puzzle setter who is very conscious about acknowledging sources for puzzles that are not my own, one question I often ask myself is: having adapted an existing puzzle into a new... Read More
India, July 13 -- There was a time when the bicycle was a widespread mode of commutation even in urban centres. I grew up in a city where many students cycled to school, although I was not one of them... Read More
India, June 29 -- If there is one place that can successfully make you buy what you may not need, it is your child's school. Selling uniforms and books is one thing, but many schools also force parent... Read More
India, June 15 -- The football World Cup is a welcome reminder of how long this column has been running. Problematics was in its infancy during the 2022 World Cup, and has completed almost a full cycl... Read More