[iPhone God App] It was found using the Brain Teasers! World's Best Logic Puzzles and Riddles actually

Now you can have the world's best and most difficult brain teasers right on your fingertips! Brain teasers are a good way to improve your mental sharpness and lateral thinking, test your friends, or just have some fun!
Brain Teasers! includes logic puzzles, riddles / jokes, matchstick quizzes, math trick and other entertaining mind benders of various types. All questions are followed by real solutions. Most of the teasers are of medium to hard difficulty but we recommend you tackle each one with a honest effort before giving up.

If you enjoy a challenge and like to think outside-of-the-box, then Brain Teasers! is the perfect game for you. It is also a great tool for developing and maintaining your mental skills, not to mention you can use it to stump your friends or teach your children. Want to play cool mind games with your friends during a long journey? You'll be glad to have this app handy!

More teasers will be added in future free updates.