The mind-sharpening puzzles include , which strengthen your deductive powers as you correctly fill in a grid to produce a picture; which engage your deductive skills to figure out the rules of a maze; , in which you are given a list of premises to figure out what can be deduced from them; and , in which a scenario is given and you fill out a matrix with the clues to deduce the solution. Each book in the (part of the larger Welfleet ) presents inspired by literature's most famous detective of all time, Sherlock Holmes, in popular brain game formats to get your started and . The games are not only entertaining, but also: The from Wellfleet Press tackles some of the greatest conundrums of our time. Learn how to navigate the world’s trickiest mazes, solve the most complex crosswords, and finally get the answer to “Why is a raven like a writing desk?” Follow literature’s most famous detective, Sherlock Holmes, as he guides you through hundreds of challenging cross-fitness brain exercises inspired by his most popular cases and adventures. You can also train your memory to perform better and learn the meanings behind your own personality traits or the traits of others. These handy and portable paperbacks are sized perfectly to travel, whether on vacation or just for your daily commute. The intricately designed covers and bold colors will capture your attention as much as the engaging content inside.   Other titles in the series include: ; ; and .