200 Sudoku Puzzles Easy Medium Difficult Vol. 4

200 Fun Puzzles at Three Progressively Difficult Levels

Challenge your mind and take a break from daily worries to get into an almost meditative state while you rack your brain as you successfully solve these puzzles.

Exercise your brain just as you (know you should) exercise your body, and reap the benefits of puzzle solving

improve your memorypractice working through problems logicallyincrease your powers of concentrationthe satisfaction of completing difficult puzzles successfullyreduce your chances of developing dementia or Alzheimers disease in the futurereduce stress levels

Perfect stocking stuffer or birthday gift for the puzzle fanatics in your family, friend, and coworker circle.