Title: Second-Degree Green Belt KenKen, Author: Tetsuya Miyamoto
Title: Brain-Stretching Logic Puzzles, Author: Barry R Clarke
Title: Healthy Brain Book of IQ Puzzles, Author: Fraser Simpson
Title: The United States of Puzzles: Word Games, Brainteasers, Trivia, and More!, Author: Eric Harshbarger
Title: Kakuro U: PhD in Kakuro, Author: Conceptis Puzzles
Title: Supergenius Logic Puzzles, Author: Barry R Clarke
Title: Second-Degree White Belt KenKen®, Author: Tetsuya Miyamoto
Title: Second-Degree Brown Belt KenKen®, Author: Tetsuya Miyamoto
Title: Second-Degree Black Belt KenKen®, Author: Tetsuya Miyamoto
Title: Kakuro U: Sophomore Year, Author: Conceptis Puzzles
Title: Catan Puzzle Book: Explore the Ever-Changing World of Catan in this Puzzle Adventure-A Perfect Gift for Fans of the Catan Board Game, Author: Richard Galland