Brain Teasers and Puzzles

653 topics in this forum

1. Sorry, the Hilbert hotel is full.

   By md65536, September 1, 2011
   • 6 replies
   • 2.9k views
   • 
   • md65536
   • September 29, 2011

2. Balls and Scales riddle

   By herbbread, September 26, 2011
   • 2 replies
   • 2.1k views
   • 
   • herbbread
   • September 27, 2011

3. What time is it? 1 2

   By needimprovement, August 16, 2010
   • 34 replies
   • 9.1k views
   • 
   • apis
   • August 20, 2011

4. samurai vs ninja 1 2

   By Abreu, November 19, 2010
   • 30 replies
   • 14.1k views
   • 
   • Sciduck
   • August 5, 2011

5. The Wetter it Gets!

   By megachirops, June 27, 2011
   • 2 replies
   • 1.7k views
   • 
   • Sciduck
   • August 5, 2011

6. Lake and alge.

   By Gness, July 6, 2011
   • 7 replies
   • 2.3k views
   • 
   • John Cuthber
   • August 1, 2011

7. How to find 1 honest villager out of 99 with $100?

   By hahaputao, July 11, 2011
   • 2 replies
   • 1.6k views
   • 
   • md65536
   • July 23, 2011

8. Email

   By Brainteaserfan, July 9, 2011
   • 3 replies
   • 2.2k views
   • 
   • Cap'n Refsmmat
   • July 10, 2011

9. What becomes wetter as it dries?

   By Mandevu, June 8, 2011
   • 4 replies
   • 2.5k views
   • 
   • John Cuthber
   • June 9, 2011

10. logical paradox

    By ishmael, January 24, 2010
    • 14 replies
    • 11k views
    • 
    • Dekan
    • June 2, 2011

11. Dew point and humidity dilema, can you solve it? 1 2

    By Nick Phoenix, May 29, 2010
    • 28 replies
    • 10.2k views
    • 
    • John Cuthber
    • June 1, 2011

12. My Questions

    By rktpro, May 30, 2011
    • 7 replies
    • 2.4k views
    • 
    • rktpro
    • June 1, 2011

13. can you read it ?

    By Kowalski, January 22, 2011
    • 16 replies
    • 5.9k views
    • 
    • ian528
    • May 26, 2011

14. A mathematical question for you.

    By Incendia, May 22, 2011
    • 2 replies
    • 2.1k views
    • 
    • Incendia
    • May 22, 2011

15. Pinocchio Paradox

    By needimprovement, September 14, 2010
    • 16 replies
    • 6.8k views
    • 
    • Schrödinger's hat
    • May 12, 2011

16. Can you answer this?

    By ieuo, April 29, 2011
    • 7 replies
    • 2.6k views
    • 
    • ieuo
    • April 29, 2011

17. Can't figure it out

    By wonderer, April 13, 2011
    • 5 replies
    • 2.6k views
    • 
    • Jasper
    • April 21, 2011

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

    By Siderney_Mello_Pops, February 15, 2011
    • 4 replies
    • 2.6k views
    • 
    • rktpro
    • April 18, 2011

19. Speak my name

    By Siderney_Mello_Pops, February 15, 2011
    • 6 replies
    • 3.1k views
    • 
    • CaptainPanic
    • April 11, 2011

20. got another one for ya....

    By jwillyg, January 17, 2011
    • 1 reply
    • 1.6k views
    • 
    • triskaidekaphile
    • April 9, 2011

21. when?

    By Siderney_Mello_Pops, March 24, 2011
    • 1 reply
    • 1.5k views
    • 
    • TonyMcC
    • March 24, 2011

22. Simply Colors

    By rigney, July 26, 2010
    • 12 replies
    • 2.9k views
    • 
    • zapatos
    • March 10, 2011

23. Which way is out??

    By Siderney_Mello_Pops, February 14, 2011
    • 4 replies
    • 2.5k views
    • 
    • soundoflight
    • March 10, 2011

24. Riddle of the Week 1 2 3 4 6

    By Kyrisch, August 12, 2005
    • 134 replies
    • 31k views
    • 
    • khaled
    • February 19, 2011

25. Brain Test :)

    By needimprovement, August 9, 2010
    • 15 replies
    • 4.5k views
    • 
    • Siderney_Mello_Pops
    • February 15, 2011