Sudoku Complete Numbers: 128 PUZZLES PLUS INSTRUCTIONS ON A New way to solve the puzzle

128 very difficult Sudoku Puzzles with instructions on solving them in a totally new way. As the puzzles get more difficult, the process of penciling in partial solutions in each square, erasing and repeating a bit messy and prone to errors. In this book all the "number possibilities" are lightly penciled in each square. Simply cross out the "non-possibilities". Start the elimination process in each 3x3 square and then continue vertically and horizontally. Continue solving the puzzle as you...