Brain Teasers and Puzzles

639 topics in this forum

1. What do you see? 1 2

   By radiohead, July 18, 2005
   • 34 replies
   • 6.3k views
   • 
   • iglak
   • May 10, 2006

2. Subliminal Messages!

   By WaR, March 16, 2006
   • 21 replies
   • 6.2k views
   • 
   • jame334
   • June 26, 2008

3. Coffee Cup Tea Cup logic

   By TakenItSeriously, July 8, 2016
   • 14 replies
   • 6.1k views
   • 
   • TakenItSeriously
   • July 9, 2016

4. rhymes with "False" 1 2

   By MonDie, May 10, 2013
   • 39 replies
   • 6k views
   • 
   • janaki
   • November 7, 2013

5. Spider and Fly problem

   By psi20, June 21, 2006
   • 13 replies
   • 6k views
   • 
   • uncool
   • September 24, 2006

6. For all Chess geniuses 1 2

   By The Almighty, December 21, 2016
   • 42 replies
   • 6k views
   • 
   • Lord Antares
   • March 5, 2017

7. ball on a ramp

   By michel123456, November 12, 2011
   • 23 replies
   • 6k views
   • 
   • michel123456
   • January 10, 2012

8. Pinocchio Paradox

   By needimprovement, September 14, 2010
   • 16 replies
   • 6k views
   • 
   • Schrödinger's hat
   • May 12, 2011

9. tesseract's riddles thread

   By Tesseract, February 15, 2005
   • 21 replies
   • 6k views
   • 
   • Pre4edgc
   • February 28, 2007

10. Bug on a Band

    By elfmotat, March 4, 2013
    • 7 replies
    • 6k views
    • 
    • King Thando Mathe
    • April 3, 2013

11. Daedalus' First Challenge

    By Daedalus, September 28, 2011
    • 21 replies
    • 5.8k views
    • 
    • Daedalus
    • September 15, 2015

12. Poison in a Glass

    By TimeSpaceLightForce, October 20, 2012
    • 12 replies
    • 5.8k views
    • 
    • TimeSpaceLightForce
    • March 30, 2017

13. Rose petals 1 2

    By Franklin, May 5, 2005
    • 37 replies
    • 5.8k views
    • 
    • reverse
    • May 31, 2005

14. Gender Island 1 2

    By md65536, May 14, 2012
    • 36 replies
    • 5.7k views
    • 
    • md65536
    • June 22, 2012

15. Try to solve it

    By fishermangeorgerando, August 14, 2011
    • 18 replies
    • 5.7k views
    • 
    • Faz
    • November 2, 2011

16. Here's a great riddle I made up based on the movie "Wishmaster"

    By Fanghur, April 9, 2011
    • 20 replies
    • 5.7k views
    • 
    • Faz
    • November 1, 2011

17. A game of Abstract Logic

    By Jerry Wickey, August 31, 2013
    • 10 replies
    • 5.6k views
    • 
    • Jerry Wickey
    • September 7, 2013

18. I need to decode this cryptogram 1 2

    By fd9, June 6, 2005
    • 27 replies
    • 5.6k views
    • 
    • calbiterol
    • June 8, 2005

19. A Simple Puzzle !

    By Commander, December 10, 2014
    • 18 replies
    • 5.5k views
    • 
    • studiot
    • December 12, 2014

20. 10 Unique Metals

    By Guest meghamann, June 8, 2005
    • 7 replies
    • 5.5k views
    • 
    • YT2095
    • June 11, 2005

21. can you read it ?

    By Kowalski, January 22, 2011
    • 16 replies
    • 5.5k views
    • 
    • ian528
    • May 26, 2011

22. Physics game 1 2

    By Bettina, August 2, 2008
    • 39 replies
    • 5.5k views
    • 
    • Kyrisch
    • August 13, 2008

23. Help Please!!

    By Guest roger_kang, May 20, 2005
    • 4 replies
    • 5.5k views
    • 
    • OldChemE
    • September 17, 2018

24. Question...

    By Bettina, November 2, 2009
    • 24 replies
    • 5.5k views
    • 
    • ishmael
    • November 10, 2009

25. rain gauge 1 2

    By Norman Albers, December 14, 2007
    • 30 replies
    • 5.4k views
    • 
    • Norman Albers
    • January 8, 2008