The New York Times Fascinatingly Fierce Crosswords (New York Times Crossword Puzzles)

The New York Times Ferocious Crosswords: 150 Hard Puzzles (New York Times Crossword Puzzles)

The New York Times Delightfully Difficult Crosswords: 150 Hard Puzzles

The New York Times Will Shortz's Xtreme Xwords: 75 Ultra-Challenging Puzzles for the Gutsy, Truly Bold and Fearless Solver

The New York Times Super Saturday Crosswords: 50 Hard Puzzles from the Pages of The New York Times

The New York Times Best of Saturday Crosswords: 75 of Your Favorite Sneaky Saturday Puzzles from The New York Times

Hellaciously Hard Fireball Crosswords: 45 Ultra-Tough Puzzles

The New York Times Tough Crossword Puzzle Omnibus Volume 1: 200 Challenging Puzzles from The New York Times (New York Times Tough Crossword Puzzles)

The New York Times Feisty Friday Crosswords: 50 Hard Puzzles from the Pages of The New York Times

The New York Times Red-Eye Crosswords: 150 Challenging Puzzles

Diabolically Hard Fireball Crosswords: 45 Ultra-Tough Puzzles