Books in the Martial Arts Puzzles Series series

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.

Beginners welcome! These 150 puzzles are perfect for kakuro newbies.

We're giving you the THIRD DEGREE! Our first- and second-degree Martial Arts Kakuro books were so incredibly popular that we know people are eager for more! So here's the next level of challenge for fans of these addictive conundrums that feature little numbers throughout the grid. Solvers have to fill in the blanks with digits that add up to the little numbers. It's fun, and it stretches your mental muscles, too! Want kakuro to solve that are just a little harder than beginning puzzles--but not so difficult as to leave you frustrated? This level's just right for you.

How tough are you? These 150 kakuro are for top solvers only!

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

Presents tough kakuro puzzles.

Kakuro is fun - but if the puzzles aren't just right, newcomers can feel frustrated. This title eases novices into solving kakuro puzzles, helping them improve and preparing them for the next level of difficulty.

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.

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.

Go way beyond difficult, with the hardest, most brain-busting sudoku you've ever seen!

Contains 300 puzzles.

Features a handy-sized format, so that puzzle lovers can play this game wherever the mood takes them.

A title that includes 300 puzzles.

Taking a page from karate - another Japanese art - each title in the series is graded by colour: White Belt for easy, Green Belt for medium level, Brown Belt for hard, and Black Belt for the super-tough solvers.

KenKen is a grid-based numerical puzzle that uses basic math operations - addition, subtraction, multiplication and division - while also challenging your logic and problem-solving skills.