Yank one into the realm of feasibility and the whole NP edifice collapses, and a scientific revolution rises from the rubble, ...

It might not seem like there's enough information to solve these logic puzzles at first—but that's part of the fun!

The annual three-day Mystery Hunt returns to campus January 17. Here’s how last year’s puzzle marathon played out.

4D. Binary events are often described by the action in the clue [Coin toss directive], and I got stuck on heads or tails. The ...

As always, we're serving up our daily hints and tips to help you figure out today's answer. If you just want to be told today ...

Robert Charlton’s second effort for The New York Times defies expectations.

That’s why we are excited to announce the launch of a five-day daily E-Paper for Columbia. This digital replica of a printed ...

What’s a 11-letter concept shared by crossword puzzles and avalanches, and starts with the letter “P?” According to one ...

Explore daily insights on the USA TODAY crossword puzzle by Sally Hoelscher. Uncover expert takes and answers in our ...

Many readers like to print out the puzzles from our online newspaper and tackle them with pen or pencil. But immensely ...

Think you don’t have time for hobbies? These three are all you need to nurture your mind, body and soul—according to ...

Or, as Hartmann describes, the letters and words that suddenly make a formerly difficult crossword puzzle much easier to solve. Hartmann, a crossword fan, was recently curious if he could generate ...