Improving Your Sudoku Skills: One Step at a Time

TRAIN YOUR BRAIN TO SEE THE POSSIBILITIES. The puzzles in the book are challenging, but each one can be solved without guessing or using candidate placeholders. Throw away the eraser, only write down a final answer, and have fun while you improve your skills. Each puzzle has a suggested order of moves, complete with an explanation for each answer. If you choose to solve it in a different order, a glance at the completed puzzle can help you through any rough spots.

Patricia O'Connor has spent...