Codes & ciphers
$7.29 - $8.69
The Mammoth Book Of Brainstorming Puzzles
$6.29 - $6.59
The Giant Book of IQ Puzzles
$4.99
Optical Illusions & Picture Puzzles
$4.69 - $4.79
The Penguin Sudoku Challenge: Volume 1
$7.49 - $9.01
Visual Vexations
$5.39 - $5.49
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
Penguin Sudoku 2010: A Whole Year's Supply of Sudoku plus some fiendish new Japanese Puzzles
Out of Stock
Lateral puzzles
$4.39
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
Out of Stock
Carnival Puzzles
$8.79 - $21.49
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
Out of Stock
Moderate Sudoku
Out of Stock
Tricky Sudoku
Out of Stock