(Paperback)

Kakuro are language-free number puzzles that use pure logic and require just simple arithmetic to solve. This book contains 150 kakuros. It takes cue from the belt colors in martial arts: white is for novices, green for intermediates, brown for very accomplished players, and black for those consummate experts who crave a challenge.

(Paperback)

These mind-benders, brainteasers, and puzzles were carefully selected so that none will be too tough for anyone without a math background - but they're not too easy. Includes solutions.

(Paperback, First Edition, First ed.)

Stimulating and delightful, this collection of puzzles features original and classic brainteasers that are neither too hard for those without a math background nor too easy for the mathematically adept. Includes solutions.

(Paperback, First Edition, First ed.)

This compilation of long-inaccessible puzzles by a famous puzzle master offers challenges ranging from arithmetical and algebraical problems to those involving geometry, combinatorics, and topology, plus game, domino, and match puzzles. Includes answers.

(Paperback)

Puzzle book.

(Paperback)

A bumper collection of easy, medium and difficult Su Doku puzzles to test your mental dexterity, powers of logic and deduction. You will find 100 easy, 100 medium and 100 hard puzzles in this collection so you can gauge your progression through the levels.

(Paperback)

An explosion in the popularity of logical number puzzles began with Sudoku and continues with Kakuro. Like all the best number puzzles, Kakuro is very simple in principle but can become increasingly complicated. What differentiates Kakuro from Sudoku is that with Kakuro you need to be able to add the numbers between 1 and 10 to solve the puzzle.

(Paperback)

Challenge yourself to some fun with over 100 brain games that will test your skills and build on them.

(Paperback)

(Paperback)

Sixy Sudoku puzzles bring a whole new dimension of logic, making a 6 x 6 possibly even more fun than a 9 x 9 Sudoku! There is no plain hard work, just a lot of logic and insight.

(Paperback)

Sixy sudoku puzzles bring a whole new dimension of logic, making a 6 x 6 possibly even more fun than a 9 x 9 sudoku! There is no plain hard work, just a lot of logic and insight.

(Paperback)

Take your eyes off the screen, and train your brain without eye strain!

(Paperback)

This book includes 200 never-before-seen Sudoku of a progressive level of difficulty, complete with an introduction and full solutions. It is guaranteed to provide hundred of hours of puzzling enjoyment.

(Paperback)

Puzzle book.

(Paperback)

You don't need to be a maths expert to get hooked on sudoku, everyone's favourite number challenge. Test your logic to the limit with a brand new collection of 200 addictive grids.

(Paperback)

Finding yourself racing through pages of Sudoku Take your puzzling to the next level with these killer versions of the popular puzzle.

(Paperback)

300 hand-picked puzzles from the world's Su Doku Master

Su Doku took the world by storm in 2004 when Wayne Gould published his first series of puzzles in The Times. Marking 20 years since this phenomenon Wayne has hand-selected 300 of his original puzzles for this special anniversary collection.

The ideal gift for every fan of Su Doku.

(Paperback)

Challenge your brain with these enjoyable puzzles

The latest book in The Times Fiendish Su Doku series previously unpublished quality Su Doku puzzles. Includes 180 Fiendish and 20 Super Fiendish puzzles.

(Paperback)

Challenge yourself with number puzzles

200 mathematical and logic puzzles to test your mental dexterity with this collection from the The Times. Just like a mathematical crossword. Ideal for all fans of Su Doku who relish grappling with figures.

(Paperback)

Challenge yourself with number puzzles

The latest volume in the hugely popular Killer Su Doku series from The Times, featuring the highest-quality puzzles with an extra element of arithmetic.

(Paperback)

For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of a five grid interlinked system.

(Paperback)

Challenge yourself with number puzzles

For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of a five grid interlinked system.

(Paperback)

Challenge yourself with number puzzles

Previously unpublished quality Su Doku grids from The Times, which help develop your skills to take on Extreme Su Doku.

(Paperback)

Challenge yourself at home with word and number puzzles

These are previously unpublished quality Su Doku grids from The Times, and help to develop you to take on Extreme Su Doku.