Brain Teasers and Puzzles

639 topics in this forum

1. Puzzle

   By The Thing, December 21, 2005
   • 4 replies
   • 3k views
   • 
   • holly_2009
   • May 10, 2006

2. Encryption

   By insane_alien, July 9, 2006
   • 4 replies
   • 1.6k views
   • 
   • hgupta
   • July 20, 2006

3. learn your 11-20 times tables

   By CanadaAotS, August 16, 2006
   • 4 replies
   • 13.1k views
   • 
   • Callipygous
   • August 20, 2006

4. Coupons equation

   By -Demosthenes-, October 25, 2006
   • 4 replies
   • 1.6k views
   • 
   • uncool
   • November 2, 2006

5. figure it out

   By playdo, January 16, 2007
   • 4 replies
   • 1.6k views
   • 
   • bottomline
   • January 24, 2007

6. "StoveInAField" (Formally "This is Not Porn")

   By alan2here, June 27, 2007
   • 4 replies
   • 3.4k views
   • 
   • alan2here
   • June 29, 2007

7. Really Hard Riddle

   By Killa Klown, July 4, 2007
   • 4 replies
   • 2.6k views
   • 
   • Physia
   • October 25, 2007

8. odd minimalist puzzle

   By nameuser, March 12, 2008
   • 4 replies
   • 1.8k views
   • 
   • nameuser
   • March 26, 2008

9. criss-cross numbers puzzle.

   By dstebbins, August 19, 2008
   • 4 replies
   • 3.4k views
   • 
   • dstebbins
   • August 20, 2008

10. A cryptogram challenge

    By illusion_21, March 15, 2009
    • 4 replies
    • 1.8k views
    • 
    • cameron marical
    • March 19, 2009

11. complexities

    By Norman Albers, April 9, 2009
    • 4 replies
    • 2.6k views
    • 
    • charmeddvd123
    • July 28, 2009

12. Math Cryptogram

    By Joker112, May 28, 2009
    • 4 replies
    • 4.4k views
    • 
    • Jacques
    • July 23, 2009

13. BentBend

    By mmx, July 27, 2009
    • 4 replies
    • 2.1k views
    • 
    • CaptainPanic
    • September 9, 2009

14. Simple mathematical puzzle...

    By Syntho-sis, September 25, 2009
    • 4 replies
    • 2.3k views
    • 
    • Syntho-sis
    • November 2, 2009

15. Impossible Quizz

    By HOMER-16, November 10, 2009
    • 4 replies
    • 2.6k views
    • 
    • japan rocks/andromeda
    • October 3, 2010

16. Another Teaser

    By rigney, July 22, 2010
    • 4 replies
    • 1.4k views
    • 
    • Moontanman
    • July 26, 2010

17. Russian Roulette

    By needimprovement, August 10, 2010
    • 4 replies
    • 3.9k views
    • 
    • Sisyphus
    • August 10, 2010

18. What is the error? Why erroneous?

    By needimprovement, September 15, 2010
    • 4 replies
    • 1.4k views
    • 
    • needimprovement
    • September 16, 2010

19. Mathematical Probability Puzzle

    By needimprovement, September 22, 2010
    • 4 replies
    • 1.9k views
    • 
    • uncool
    • September 27, 2010

20. Which way is out??

    By Siderney_Mello_Pops, February 14, 2011
    • 4 replies
    • 2.3k views
    • 
    • soundoflight
    • March 10, 2011

21. You have to think about this one...

    By Siderney_Mello_Pops, February 15, 2011
    • 4 replies
    • 2.5k views
    • 
    • rktpro
    • April 18, 2011

22. What becomes wetter as it dries?

    By Mandevu, June 8, 2011
    • 4 replies
    • 2.4k views
    • 
    • John Cuthber
    • June 9, 2011

23. Daedalus' Second Challenge

    By Daedalus, September 29, 2011
    • 4 replies
    • 3.1k views
    • 
    • Daedalus
    • October 13, 2011

24. Who wins this race?

    By md65536, October 20, 2011
    • 4 replies
    • 1.7k views
    • 
    • Axioms
    • October 28, 2011

25. The Bus Driver

    By megachirops, February 4, 2012
    • 4 replies
    • 8k views
    • 
    • searchingfortruth
    • February 6, 2012