Brain Teasers and Puzzles

647 topics in this forum

1. Cryptogram

   By Fisica, November 26, 2010
   • 6 replies
   • 3.8k views
   • 
   • imatfaal
   • November 30, 2010

2. Gbrainy!

   By Lemuridae, November 5, 2010
   • 1 reply
   • 1.3k views
   • 
   • CaptainPanic
   • November 22, 2010

3. Cube maths puzzle

   By capo, November 13, 2010
   • 12 replies
   • 4k views
   • 
   • capo
   • November 16, 2010

4. Probability

   By needimprovement, October 19, 2010
   • 3 replies
   • 1.6k views
   • 
   • swansont
   • October 19, 2010

5. riddles 1 2 3 4 10

   By LucidDreamer, October 22, 2004
   • 236 replies
   • 46.8k views
   • 
   • between3and26characterslon
   • October 19, 2010

6. counting triangles

   By shezleng, September 23, 2010
   • 1 reply
   • 2.3k views
   • 
   • imatfaal
   • October 14, 2010

7. Impossible Quizz

   By HOMER-16, November 10, 2009
   • 4 replies
   • 2.7k views
   • 
   • japan rocks/andromeda
   • October 3, 2010

8. Mathematical Probability Puzzle

   By needimprovement, September 22, 2010
   • 4 replies
   • 2k views
   • 
   • uncool
   • September 27, 2010

9. Another puzzle

   By needimprovement, August 26, 2010
   • 5 replies
   • 2.8k views
   • 
   • Enigm4
   • September 25, 2010

10. Decipher Me

    By swansont, September 24, 2010
    • 1 reply
    • 1.5k views
    • 
    • Moontanman
    • September 24, 2010

11. What is the error? Why erroneous?

    By needimprovement, September 15, 2010
    • 4 replies
    • 1.5k views
    • 
    • needimprovement
    • September 16, 2010

12. Math challenge

    By needimprovement, September 14, 2010
    • 1 reply
    • 1.6k views
    • 
    • the tree
    • September 14, 2010

13. Puzzle

    By needimprovement, September 11, 2010
    • 3 replies
    • 2k views
    • 
    • CaptainPanic
    • September 13, 2010

14. help with a riddle me ree

    By waydol, May 23, 2010
    • 17 replies
    • 7.1k views
    • 
    • waydol
    • September 8, 2010

15. smallest unused natural number

    By Danijel Gorupec, August 27, 2010
    • 7 replies
    • 2.9k views
    • 
    • ajb
    • September 6, 2010

16. Riddle

    By needimprovement, August 10, 2010
    • 5 replies
    • 1.7k views
    • 
    • Shadow
    • August 16, 2010

17. Please to help with Cryptogram...

    By Cuthbert, May 29, 2007
    • 3 replies
    • 2.8k views
    • 
    • Bonzi77
    • August 14, 2010

18. Russian Roulette

    By needimprovement, August 10, 2010
    • 4 replies
    • 4.2k views
    • 
    • Sisyphus
    • August 10, 2010

19. Measurement

    By needimprovement, August 6, 2010
    • 6 replies
    • 1.6k views
    • 
    • Guest
    • August 10, 2010

20. What's the weight of the part?

    By needimprovement, August 5, 2010
    • 9 replies
    • 1.9k views
    • 
    • Guest
    • August 10, 2010

21. Please solve this equation

    By needimprovement, August 5, 2010
    • 6 replies
    • 2.1k views
    • 
    • Sisyphus
    • August 5, 2010

22. Scientific Expedition

    By needimprovement, August 5, 2010
    • 0 replies
    • 1.1k views
    • 
    • needimprovement
    • August 5, 2010

23. Probabilities

    By D H, July 30, 2010
    • 2 replies
    • 1.4k views
    • 
    • DJBruce
    • July 31, 2010

24. Love

    By rigney, July 27, 2010
    • 0 replies
    • 1.8k views
    • 
    • rigney
    • July 27, 2010

25. Another Teaser

    By rigney, July 22, 2010
    • 4 replies
    • 1.5k views
    • 
    • Moontanman
    • July 26, 2010