Simon Anthony is cohost of a sudoku YouTube channel called Cracking the Cryptic. In this video he solves a difficult sudoku puzzle with extra constraints. It's really fun to watch him solve it and get more excited as his sense of wonder grows ("This is like the universe is singing to us," he says as he begins to realize that it is solvable). I watching the whole 25-minute video.
My father introduced me to the “Cross the Network” puzzle when I was a kid. Here it is, as described by Martin Gardner in one of his early Mathematical Recreations columns, which ran in Scientific American from the 1930s to the 1980s. One of the oldest of topological puzzles, familiar to many a schoolboy, consists […]
There are times when I get tired of all of the major sites and apps that make up a lot of the seen Internet. Sadly, I was born too late to experience the wonder of Geocities and intricate handmade websites run by just a single person. But, on some evenings, I still search for those […]
Here’s a puzzle from Martin Gardner’s Mathematical Games column, which ran for many years in Scientific American. I found it in his low-priced Dover edition anthology, My Best Mathematical and Logic Puzzles. Imagine that you have three boxes, one containing two black marbles, one containing two white marbles, and the third, one black marble and […]
Even after months of working from home, you’d be forgiven for thinking the whole experience still doesn’t quite feel…well, normal. In addition to all the obvious environmental changes of handling your 9 to 5 from your den or dining room table, the technological aids you didn’t realize you loved back at the office probably don’t […]
Running a small business drops a lot on to the plate of just one person. And between juggling a dozen tasks that need to get handled daily, it’s no surprise that there are a dozen more equally vital tasks that can just as easily go overlooked. While posting to social channels and making web posts […]
The importance of reading is well documented. About half of America’s unemployed between 16 and 21 years old are functionally illiterate. And there’s an almost direct line between how much you read and your earning potential, with the richest Americans three times more likely to read than those with a household income below $30,000. However, […]