Crossword Compendium - Over 285 Challenging Puzzles to Solve!

Mensa: Crosswords - More than 100 Puzzles to Test Your Word Power and General Knowledge

Mensa: Killer Sudoku - More than 200 of The Most Difficult Puzzles

Mensa: Logic Puzzles - More Than 150 Brain Teasers to Test Your Power of Deduction

The Guardian: Cryptic Crosswords

Book 2 - A Collection of More Than 100 Difficult Puzzles

The Guardian: Quick Crosswords

Book 2 - A Collection of More Than 200 Enjoyable Puzzles

101‎ Wacky and Wonderful Wordsearches

101‎ Wacky and Wonderful Wordsearches

The New York Times Springtime Solving Crosswords - 75 Bright and Easy Puzzles

The Brain Fitness Book - Activities and Puzzles to Keep Your Mind Active and Healthy

Quick & Easy Crosswords

Timeless Puzzles: Crossword 2