These pages may not help those who are foolishly afraid of mathematics, but the puzzles should be interesting to anyone who wants to understand more than the surface of things.
Rick Ganong can be hard to take, but he is very generous about sharing ideas, especially regarding math and logic.
David Gries is a noted computer scientist and mathematician. Mr. Gries has strong opinions about the use of logical principles in problem-solving and computer programming. The second link contains an interesting interactive java training exercise.
Raymond Smullyan is a mathematician with a very healthy penchant for puzzles.
The midaslink site has a Knight's tour game that can be very addictive.
Tom's art is expressive in an unusual way.
Mr. Toida's interactive exercises in fundamental logic are very well done and express the fundamental concepts of logic in an elegant way.
The retro site combines chess and puzzles in a clever way.