Expert Sudoku is an all-new collection of handcrafted puzzles for the expert puzzle-solver. This is the book that challenges skilled solvers and Sudoku-lovers at the top level—every one of the 320 puzzles is rated "difficult." Good luck!

Are you a slave to sudoku? It's time to surrender to your puzzle cravings. This collection of two hundred challenging puzzles will have you coming back for more! Features: - 200 hard sudoku puzzles - Big grids for easy solving - Introduction by legendary puzzlemaster Will Shortz

Packed with dozens of the most difficult Hidden Pictures puzzles Highlights has ever created, this book is perfect for advanced puzzlers ages 8-12 looking for a next-level challenge! This jam-packed collection includes over 80 advanced Hidden Pictures puzzles, including photo puzzles, puzzles without clues, puzzles with scrambled clues and more. A great gift for anyone who loves a puzzle challenge, this engaging activity book is filled with more than 1,500 total objects to find. Kids (and grown-ups, too) will need to keep their eyes peeled searching through hilarious scenes like sloths playing ping pong, dogs enjoying a fiesta, and a fishy carnival. There are both full-color and classic black-and-white scenes to solve. Over 125 pages of puzzles adds up to hours of screen-free fun, great for keeping kids engaged during road trips or rainy afternoons at home. Plus, this book is crafted by puzzle experts to include learning benefits parents can count on. Searching for hidden objects is a great way for kids to develop important school skills like vocabulary, concentration and visual perception. Every puzzle solved will boost kids’ confidence and encourage them to take on new challenges.

Relieve boredom and stress by playing Sudoku. This single level sudoku puzzle book contains plenty of puzzles to keep you busy for many hours. There are 4 puzzles per page and solutions are at the end of the book.

The difficulty level soars, as even more tricks get added to the mix: X-Wing; Swordfish; XY-Wing; XYZ-Wing; and the Gordonian Rectangle.

A pocket-sized brain gym! Mental games, visual conundrums, logic posers, riddles, illusions—in all, over 500 dazzling, full-color puzzles designed to stretch neurons and shake up your usual way of thinking. Be creative. Be challenged. Push your brain in different directions. The puzzles are organized by 12 types with 10 levels of difficulty, each designed to make you feel more curious, intuitive, engaged, and smarter. Written by David L. Hoyt, the most syndicated puzzle writer in the country, with Merriam-Webster, America’s most trusted dictionary. All in a travel-friendly, gift-friendly 4" x 6" chunky size. In Mixed-Up Definition, unscramble the letters to reveal the definition of a given word. In Syllabary, use the clues to link syllables in a grid to create words. In Cross’d Word Connections, find the letters in common to help solve a series of four crossword puzzles. Plus Dictionary Race Winder, Make the Connection, Color Word Chains, Prism Word Finder, and other clever riffs on word searches. The book features 20 puzzle types, which are arranged in a mixed fashion throughout for maximum variety and stimulation. They range in difficulty from an easy “1” to a brain-busting “10”—so puzzle lovers of all skill levels will be tested— and include spaces for recording completion times. Each puzzle type is explained in clear instructions, and all answers are printed in the back.

Sudoku fans will welcome this bright new twist to the popular puzzles! Every one of these ingenious creations--from "Bold X" to "Rainbow Up"--makes colors and patterns part of the solving fun. And although each puzzle maintains the normal 9x9 grid and follows the basic rules of the game, every style adds an additional restriction to intensify the challenge. In "Worms," for example, swirly, squirmy shapes fill the grids; the numbers increase as you work your way from head to tail. "Even/Odd" features squares in two colors, depending on whether the number to fill it is even or odd. And in "Positional Board," no two of the red squares can be the same number. They're all lots of fun!