This extremely rare, premium dotcom domain name offers many different opportunities. People are always fascinated by puzzles and activities to eat up time, whether at work or in pursuit of an enjoyed hobby. You can host a warehouse of available puzzles for download and offer opportunities to buy particular puzzle brands or books with affiliate programs. Weekly or monthly contests related to solving a special puzzle or submitting a unique puzzle would make it easy to draw in visitors time and time again. There would be an endless amount of advertising and cross promotion possibilities.
Adding a forum to the site could allow people to debate their answers to particular puzzles or discuss the merits of one puzzle type over another. Have people subscribe to a weekly newsletter where you highlight the newest, most popular or most difficult puzzles available. Allow people to rate different puzzles based on enjoyment or on difficulty level.
This extremely rare premium dotcom domain name offers a great opportunity at creating a high level of interaction with visitors. The domain name would receive high search engine rankings and plenty of direct traffic from people trying to find puzzles.
Totally unique and ultra rare domain name.