What is the New York Times Sunday crossword puzzle?

The New York Times Sunday crossword puzzle is published weekly in the print and online editions of the New York Times. Created by various freelancers, the Sunday puzzle has been published since 1993. It is an icon of the American culture.

The New York Times publishes a crossword puzzle every day. The difficulty increases throughout the week, with the Monday puzzle being the easiest one and the Saturday one the most difficult. While the daily crossword puzzles are 15 by 15 squares, the Sunday one is 21 by 21 squares, with 23 by 23 and 25 by 25 variations on some weeks.