Play our puzzles because… …they are awesome intelligent fun! All our puzzles are mind challenging – use left and right brains, enhance memory, creativity, apply logical deductive reasoning–all while having a roaring great time! Learn through play – focus, flexibility, persistence, logic, creativity and more! They are exquisitely crafted! Multilayered – Amazingly simple or fiendishly complex – you decide! Addictive, compelling – they hook you for life! Engage your mind and immerse yourself into a whole new world of think!         The ultimate puzzle.1000's of challenges from easy to very complex. Minutes to learn. Puzzle playable online and offline. One fresh challenge every week for 100 years! More...   The world's oldest puzzle meets the 21st century! Easy, difficult, creative and compelling. Both aspects of puzzling - contained and free form. More...     Possibly the Hardest Puzzle ever! "It will challenge your powers of deduction to the max…" “COMPELLING!” More...     The Dr. Wood Challenge Centre is delighted to bring you the Mind Challenge Classics Series. This line of devious, intriguing More...