Provides over 100 interesting puzzles that can help students learn to enjoy puzzles and mathematics. With workshops and activities.

Devotes to math teachers, students, and lovers of math puzzles. Includes problems and solutions.

Provides contest and reader comments, feedback, and contact details. With information on how to do puzzle works.

Information about the type of puzzle where words are put together into an arithmetic formula. With contact information and alphametics pages.

Contains the ever growing list of brain teasers and math puzzles. With downloads and registration information.

Contains puzzles, related links, and biography. With contact information.

Presents archived years of problems with solutions. Includes search for specific problems.

Information about the classic puzzles and riddles that require only simple logic. With biography and contact details.

Number puzzles which replace digits with symbols. Find rules and links to other cryptarithm sites.

Includes powerful magic tricks, puzzle games, and online flash games. With contact information.

Provides valuable contents to educators and young learners. With contact information and related links.

Contains group games and author's information. With problems and solutions.

Unique information offered on the properties of numbers by simply entering a number into the search box.