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There are 50 more giant 25x25 Sudoku puzzles in this third volume, printed on 8-inch-wide paper if bought pre-printed. Place A to Y into each row, column and 5x5 box to solve each carefully-crafted 8-way symmetrical puzzle. All puzzles are guaranteed human-solvable - in fact you can complete every Sudoku in the book without having to make any temporary pencil mark notes.