The New York Times Double Shot Crosswords: 150 Challenging Puzzles

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

The New York Times Genius Sunday Crosswords: 75 Sunday Crossword Puzzles from the Pages of The New York Times

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

The New York Times Hardest Crosswords Volume 1: 50 Friday and Saturday Puzzles to Challenge Your Brain

The New York Times Best of the Week Series: Saturday Crosswords: 50 Challenging Puzzles (The New York Times Crossword Puzzles)

The New York Times Red-Eye Crosswords: 150 Challenging 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 Hardest Crosswords Volume 2: 50 Friday and Saturday Puzzles to Challenge Your Brain

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

Scorchingly Hard Fireball Crosswords: 45 Ultra-Tough Puzzles