Serial adventures, continuing story and puzzles building towards a final puzzle and solution.

Free online and printable Crossword and Sudoku puzzles. Puzzles are offered daily and weekly with an archive. Also offers online crossword dictionary, daily horoscopes, and discussion forum.

Collection of original puzzles developed over the years to celebrate the winter holidays.

Educational puzzles, brain teasers, mathematical recreations and word games. A resource for anagrams, cryptograms, alphametics, word puzzles, logic problems, doublets, tangrams, chess, and math quizzes.

Includes charades, riddles, and enigmas.

Crosswords, wordsearches, cryptograms, quizzes, wordplay and other interactive and printable puzzles and games.

Original trivia, logic, visual and word puzzles.

Information about language and culture independent puzzles and logic games.

Contests of varying difficulty and types. Also has tutorials with worked examples and practice games. [Registration required]

The answers to the bottlecap rebus style puzzles found on Rainier Beer and Pearl Beer caps.

A puzzle hunt run every year at Stanford.

Pictographic puzzle microcosm of old and new playing cards, poems, games and lore. New suits: the zodiac, solar system, evolution, human family, ancient elements, astronomical basis of the calendar and compass.

Collection of puzzles, brain teasers, mind benders, logic problems, cryptograms, patterns, and enigmas.

Printable puzzles and other diversions to help substitute teachers involve their temporary students in mind stretching activities.

Information on World Puzzle Championships including links to sample word and logic puzzles.

Shareware software programs available to create custom crossword and word searches.

Collection of brain teasers, logic puzzles, paradoxes and mathematical riddles.