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Sudoku fans always keep an eagle eye out for fresh formats featuring their favorite puzzles. Here’s one sure to draw them in: 210 sudoku that add a little spice to the mix by changing the standard 9 x 9 puzzles to 10 x 10. That means solvers get 100 squares instead of just 81! And the numbers go from zero to nine, rather than one to nine. Plus, the smaller sections within each grid are no longer 3 x 3: half the puzzles feature rectangular 5 x 2 boxes and the rest come in various random shapes, with heavy lines marking out the separate areas. It may seem daunting at first—but it’s fun!
Frank Longo has had more than 3,000 crossword puzzles published since 1993, and in the past few years has turned his attention to the sudoku craze. He has published over 100 sudoku books, including Oy Vey! Sudoku; 10x10 Sudoku; Absolutely Nasty Sudoku Levels 1, 2, 3, and 4; The World's Longest Sudoku Puzzle; The Sudoku Code (coauthored with Francis Heaney); and Puzzlewright Guide to Solving Sudoku (coauthored with Peter Gordon).