Puzzle Cloud Sudoku Vol 4 (500 Puzzles, Very Hard+) - Sue Watson - Bog

500 PuzzlesDifficulty: Very Hard+Includes Answersand Enlightening quotes to keep you motivated
Puzzle Cloud Sudoku: Helps improve memory, recall, and number skills with 500 unique puzzles!
Keep your brain active and reduce the risk of dementia. Get a sense of mastery and accomplishment while lowering feelings of anxiety and stress. Feel refreshed and renewed as you challenge your mind and improve your skills!