You can now show off your puzzle prowess on the New York Times Games' new multi-game leaderboard ... and engage in friendly rivalries with other word nerds by using the leaderboard, which TODAY ...

This new puzzle is a word search with a unique twist ... word searches started to appear more in newspapers and activity books. Juliette Seive, a research director on the New York Times Games ...

or books that are themselves puzzles. But then there's Codex Silenda---a gorgeous, wooden book of brainteasers that is itself a multi-part mystery. As page-turners go, Codex Silenda is a special case.