Puzzles
A2zWordFinder.com - http://www.a2zwordfinder.com/
A free online dictionary for crosswords, and vocabulary utility for quickly finding words while youre solving word puzzles and games of all kinds as well as educational lessons.
About.com Crossword Puzzles - http://puzzles.about.com/cs/crosswords/
Provides a database of puzzle sites and also has reviews and general information on each one.
Brain Games - http://puzzlesriddles.com/
Offers interesting authored and folk logical games and puzzles.
Puzzletome - http://www.puzzletome.com/
Provides puzzle games ranging from easy to difficult with many different themes. Free registration is required.
Solve my base three numerical self-referential sentences puzzle! - http://www.ddewey.net/puzzle/
Puzzle game where the object is to create 4 truthful but related sentences.