(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)

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Previously unpublished quality Su Doku grids from The Times, which help develop your skills to take on Extreme Su Doku.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

Sudoku fans keep an eagle eye out for fresh formats featuring their favorite puzzlesand these 210 sudoku spice up the mix by changing the standard 9 x 9 puzzles to 10 x 10. So solvers get 100 squares (not 81), and numbers that go from zeronot oneto nine. Plus, many of the grids feature bigger 5 x 2 boxes or random shapes for extra fun.

(Paperback)

For solvers who have dared to come this farcongratulations! Your reward is the roughest, toughest kakuros ever put on paper. Good luckyou'll need it!

(Paperback)

Level onebut absolutely not for beginners! This is the beginning of fans' hard but satisfying solving journey.

(Paperback)

Only hardcore kakuro devotees should dare enter here. For those who can, it's head-exploding puzzle solving.

(Paperback)

On the second level, the clues are getting nastierbut the pleasure in completing these tricky puzzles is even greater.

(Paperback)

The vast majority of sudoku puzzles that are labeled "hard," "expert," "challenger," are not really all that difficult. And in a surprising number of cases, they are downright easy. Part of the "Absolutely Nasty Sudoku" series , this book provides basic and intermediate puzzles and techniques.

(Paperback)

Kakuro language-free number puzzle that uses pure logic and requires just simple arithmetic to solve. This book is a part of a multilevel series of "belt" books, each containing 150 kakuros. These books take their cue from the belt colors in martial arts such as: white is for novices, and black for those consummate experts who crave a challenge.

(Paperback)

Are you experienced These are the hardest KenKen for super-solvers only!

(Paperback)

Are you a KenKen expert Then see if you have the skills to handle these high-level puzzles!

(Paperback)

So, you've worked your way through the easiest, for-beginners-only KenKen. The next level awaits you. Do you have what it takes

(Paperback)

When you focus on solving a puzzle, the problems of the world seem to slip away. It's a meditative, Zen process and these 272 elegant, intricate sudoku, designed to resemble mandalas, engage both the eye and the mind in new ways.

(Paperback)

Presents tricky kakuro puzzles that require the very best skills - and give top solvers the complete mental workout they want.

(Spiral bound)

(Paperback)

Suitable for puzzle lovers, this title includes 300 puzzles.

(Paperback)

(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)

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.