A PUZZLER'S DELIGHT: Start with easier puzzles at the beginning of each week, then work your way up to some serious stumpers. But don't worry--if you get stuck, the solution is on the reverse side of each page. FROM THE EXPERTS: This is the official New York Times crossword, first published during WWII to distract war weary readers. Each of these puzzles is edited by NYT crossword icon Will Shortz. NOW PLASTIC-FREE!: Page-A-Day(R) Calendars are environmentally friendly! Printed on responsibly sourced paper and 100% recyclable, with sturdy cardboard backers.