Synopses & Reviews
Sudoku fans will welcome this bright new twist to the popular puzzles! Every one of these ingenious creationsfrom 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. Theyre all lots of fun!
Synopsis
This brand-new sudoku variant will have logic lovers seeing double! Instead of appearing only once in every row and column, each number appears TWICE. And instead of the usual three-by-three areas, these puzzles have irregular shapes. These twists add spice to the solving, variety to the sudoku, and make every puzzle a unique challenge for your eyes and mind.
Synopsis
Whips, handcuffs . . . sudoku? When you're in the mood for some masochistic pleasure, this variant of the popular puzzle will satisfy your desires. Each 10x10 grid is divided into ten regions of 5x2. Play like regular sudoku, except using numbers 0-9. Then comes the twist: each sudoku also has five 10-square grey regions to complete—a total of 50 squares of grey.
About the Author
Mr. Riley is a software developer at Fairfield Language Technologies, and the author of numerous computer programs that analyze variants of sudoku puzzles. Dr. Taalman is a professor of mathematics as James Madison University. Her research interests include singular algebraic geometry, knot theory, and open questions about the mathematics of sudoku and other puzzles. Their 6-year-old son Calvin is not able to solve any of the puzzles in this book . . . yet.