Links | A collection of puzzles at high school level. Does not include answers. |
 www.lifesmith.com/mathpuz1.html| 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. |
www.allstarpuzzles.com/quotes/| Explore known burr puzzles and calculate new ones using the burr calculator. |
www.research.ibm.com/BurrPuzzles/| Offers many types of crossword puzzles, creation software, and solving tools. |
www.crossword-puzzles.co.uk/| A selection of online crossword puzzles sorted by difficulty. |
iteslj.org/cw/| Educational and recreational puzzles for teachers, students and parents. Each puzzle is graded by difficulty and has a hint. |
www.freepuzzles.com/| A beautifully illustrated collection of puzzles, riddles, and paradoxes. Features a changing "unsolved puzzle" plus three years worth of previous puzzles. |
www.greylabyrinth.com/| Collection of original puzzles developed over the years to celebrate the winter holidays. |
www.radix.net/~erewhon/puzl/rindex.html| 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. |
www.jigzone.com/| Set or solve lateral thinking puzzles. Includes a selection of current and already solved puzzles. |
www.lateralpuzzles.com/| Celebrates math puzzles and mathematical recreations. |
www.mathpuzzle.com/| Online playable puzzles and games written in Java, and an interesting maze generator program. |
www.mazeworks.com/home.htm| Mathematical puzzles, with hints, full solutions, and links to related math topics. |
www.qbyte.org/puzzles/| Online Shockwave and java jigsaws of varying difficulty, with daily and weekly additions. |
www.dltk-kids.com/puzzle.htm| Carlos Rivera's collection of problems and puzzles related to prime numbers. |
www.primepuzzles.net/| Many puzzles to choose from: crosswords, anagrams, doublets, trivia, math and word searches. |
thinks.com/puzzles/| Different varieties of mass produced mechanical puzzles as well as individual hand crafted puzzles and information for collectors. |
www.johnrausch.com/PuzzleWorld/default.htm| Recreational mathematics including puzzles to make and solve, tessellations, geometric puzzles, optical illusions, and curiosities. |
www.archimedes-lab.org/| Offers serial adventures, continuing story and puzzles building towards a final puzzle and solution. |
www.questexperiences.com/quest2/PortsToAdventure/AdventurePuzzles/default.asp| An archive of many popular puzzles from the rec.puzzles newsgroup. |
rec-puzzles.org/| Information on World Puzzle Championships including links to sample word and logic puzzles. |
home.versatel.nl/kostunix/ | |
