
The Giant Book of IQ Puzzles
$4.19

The Mammoth Book Of Brainstorming Puzzles
$14.99 - $15.89

Codes & ciphers
$7.49

Optical Illusions & Picture Puzzles
$6.69

The Penguin Sudoku Challenge: Volume 1
$6.29 - $9.46

Visual Vexations
Out of Stock

Penguin Holiday Sudoku
Out of Stock

Penguin Sudoku 2009: A Whole Year's Supply of Sudoku plus some fiendish new Japanese Puzzles
Out of Stock

Universal Sudoku Puzzle
Out of Stock

Lateral puzzles
$7.79

Penguin Sudoku 2010: A Whole Year's Supply of Sudoku plus some fiendish new Japanese Puzzles
Out of Stock

Brain Storming Puzzles
Out of Stock

IQ Puzzles
Out of Stock

Iq Mine Field
Out of Stock

2007 Penguin Sudoku
Out of Stock

Penguin Sudoku 2013: 365 Brand New Sudoku for Every Day of the Year Plus the Latest Addictive Japanes e Puzzles
Out of Stock

Riddles of the Sphinx
$10.29

Carnival Puzzles
$5.79

Monster Book of Family Puzzles
Out of Stock

Penguin Sudoku 2006: A Year's Supply of Sudoku and Some Fiendish New Japanese Puzzles
Out of Stock

Pocket Penguin Sudoku 3: The Perfect Book of Protable Puzzles
Out of Stock

The Penguin Sudoku Challenge: Volume 2
Out of Stock

Difficult Sudoku
Out of Stock

Fiendish Sudoku
Out of Stock

Penguin Sudoku 2015
$23.19

Moderate Sudoku
Out of Stock

Tricky Sudoku
Out of Stock

IQ PUZZLE BOOK
Out of Stock