Add to the general feeling of holiday coziness when you curl up with this collection of 100 crossword puzzles, selected by stalwart New York Times puzzle editor Will Shortz. Ranging from easy to difficult (with the answers in the back), these puzzles will of course require you to know a thing or two about literature, music, sports, history, geography, linguistics, and science, but the pop culture has been brought up to date with clues pertaining to Game of Thrones, Sons of Anarchy, and The Incredibles.