Algebraic Math Puzzles A collection of puzzles at high school level. Does not include answers. http://www.lifesmith.com/mathpuz1.html - More
All-Star Puzzles The letters of a quote written in a crossword-style grid are transposed; the solver uses our unique Quotation Puzzle program to reconstruct the original. http://www.allstarpuzzles.com/quotes/ - More
Burr Puzzle Site Explore known burr puzzles and calculate new ones using the burr calculator. http://www.research.ibm.com/BurrPuzzles/ - More
Buy Sudoku Puzzles Great selection electronic sudoku games, sudoku books, and board games at low everyday prices. Also offers free online sudoku puzzles and free sudoku solving software. http://www.buysudokupuzzles.com/ - More
Crossword Puzzles Offers many types of crossword puzzles, creation software, and solving tools. http://www.crossword-puzzles.co.uk/ - More
Free Puzzle Collections Educational and recreational puzzles for teachers, students and parents. Each puzzle is graded by difficulty and has a hint. http://www.freepuzzles.com/ - More
Grey Labyrinth A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles. http://www.greylabyrinth.com/ - More
Holiday Puzzles Collection of original puzzles developed over the years to celebrate the winter
holidays. http://www.radix.net/~erewhon/puzl/rindex.html - More
Jigsaw Puzzles Online Online jigsaw puzzle hundreds pictures puzzle shapes choose. Control level of difficulty fun all the family, distraction at work, or boring days. Send puzzle postcards to friends, subscribe to the puzzle of the day. http://www.jigzone.com/ - More
Lateral Puzzles Forum Set or solve lateral thinking puzzles. Includes a selection of current and already solved puzzles. http://www.lateralpuzzles.com/ - More
MathPuzzle.com Celebrates math puzzles and mathematical recreations. http://www.mathpuzzle.com/ - More
MazeWorks - Java Games and Puzzles Online playable puzzles and games written in Java, and an interesting maze generator program. http://www.mazeworks.com/home.htm - More
Nick's Mathematical Puzzles Mathematical puzzles, with hints, full solutions, and links to related math topics. http://www.qbyte.org/puzzles/ - More
Online Jigsaw Puzzles Online Shockwave and java jigsaws of varying difficulty, with daily and weekly
additions. http://www.dltk-kids.com/puzzle.htm - More
Puzzle Parade Many puzzles to choose from: crosswords, anagrams, doublets, trivia, math and
word searches. http://thinks.com/puzzles/ - More
Puzzle World Different varieties of mass produced mechanical puzzles as well as individual hand crafted puzzles and information for collectors. http://www.johnrausch.com/PuzzleWorld/default.htm - More
PUZZLES. Can you believe it? Recreational mathematics including puzzles to make and solve, tessellations, geometric puzzles, optical illusions, and curiosities. http://www.archimedes-lab.org/ - More
Quest Adventure Themed Puzzles Offers serial adventures, continuing story and puzzles building towards a final puzzle and solution. http://www.questexperiences.com/quest2/PortsToAdventure/AdventurePuzzles/default.asp - More
Sudoku Essentials Printable Sudoku puzzles, solving techniques, and handheld and board game reviews to enhance your visiting experience. http://www.sudokuessentials.com/ - More
The rec.puzzles Archive An archive of many popular puzzles from the rec.puzzles newsgroup. http://rec-puzzles.org/ - More
Tim's World of Puzzles Information on World Puzzle Championships including links to sample word and logic puzzles. http://home.versatel.nl/kostunix/ - More