Here's a selection of crossword puzzles that will challenge even the most experienced solvers. One recommendation: work these puzzles in pencil and have a good eraser on hand.
The New York Times Will Shortz's Xtreme Xwords
For the word cruncher looking for an expert challenge, 75 Ultra-Challenging Puzzles for the Gutsy, Truly Bold and Fearless Solver. Paperback: 96 pages. ISBN: 9780312352035
The New York Times Tough Crossword Puzzles Volume 13
100 mind-bending crosswords from Friday and Saturday editions of the New York Times appearing for the first time in book form. Edited by Will Shortz. Paperback: 128 pages. ISBN: 9780312342401
The New York Times Sunday Crossword Puzzles
50 Extra-Challenging crosswords that originally appeared in the Sunday edition The New York Times. Spiral-bound: 64 pages. ISBN: 9780312360665
Heaps of Crosswords - 300 challenging crosswords
This collection of 300 challenging crossword puzzles will keep you busy for weeks on end. Paperback: 336 pages. ISBN: 9780517227602
Mensa Crosswords for the Super Smart:
72 Cranium-Crushing Challenges These extra-challenging puzzles have very few black squares, which means the answers are fairly long, and the clues can be quite tricky. Not for the faint of heart. Paperback: 96 pages ISBN: 9781402713873
The New York Times Vocabulary Power Crosswords
A good vocabulary is essential in successful crossword puzzle solving. In this book, obscure and unusual terms found, for the most part, only in crossword puzzles (crosswordese) are highlighted and defined. If you've ever wondered what words like calx, etui, and stoa mean, then this book will help enlighten you and will make a nice addition to your crossword collection. Paperback: 128 pages. ISBN: 9780312351991
New York Times Toughest Crossword Puzzles, Volume 1
Ninety extra-challenging crossword puzzles from the Saturday editions of The New York Times along with ten bonus puzzles to challenge even the most demanding crossword puzzlers. Edited by Eugene T. Maleska. Paperback: 128 pages. ISBN: 9780812935899
Oodles of Crosswords : 500 Challenging Puzzles
Can't get enough crosswords to satisfy your puzzling habit? This super-sized volume of 500 challenging crosswords from Stan Newman should keep you busy for a little while. Paperback: 288 pages. ISBN: 9780517225011
LA Times Sunday Crosswords
Challenging, punny Sunday crosswords from the prolific team of puzzle constructors, Sylvia Bursztyn and Barry Tunick, who have co-written over 1,000 Sunday puzzles for The Los Angeles Times since 1980. Spiral-bound: 64 pages. ISBN: 9780812934236
Mensa Crossword Puzzles
From Mensa: "A huge selection of crosswords guaranteed to entertain the sharpest minds." Paperback: 224 pages. ISBN: 9781842221471
