Circle 9 is a daily logic puzzle on the web: circle9puzzle.com Every day, there is one Easy, Medium and Hard puzzle available for free. (There is also a Very Hard puzzle every Saturday.) After purchasing Plus, you can play as many puzzles as you want each day! Sales of Plus are what support the puzzle and its inventor. If you enjoy solving Circle 9 regularly, please show your support! Thank you very much. Circle 9 is addictive! Luckily, it's also good for you. Solving puzzles has been shown to: * keep your mind sharp * provide an escape that reduces stress * make you feel happy