This week’s puzzle is difficult. Not because it has an exceedingly complicated solution, but because the idea that underlies it is deep and ingenious. I only know of one method to solve it, but I’m ...

As an academic discipline, logic is the study of reasoning. Logic puzzles, therefore, involve solving problems by making a ...

One of the most famous logic puzzles of all time involves a fork in the road, where one path leads to freedom and the other leads to your death. Each path has a guard, and one of them always tells the ...

We are hardly ever consciously aware that we use logic to solve everyday problems. But what is logic? Is the logic used to prove theorems in mathematics the same kind that we use for our practical ...