Brain Teasers and Puzzles

639 topics in this forum

1. Einstein's Puzzle

   By AL, October 24, 2004
   • 6 replies
   • 3.6k views
   • 
   • psi20
   • November 15, 2004

2. Story riddle

   By questionposter, April 15, 2012
   • 24 replies
   • 3.6k views
   • 
   • questionposter
   • April 19, 2012

3. Find the Magic Square !

   By Commander, May 22, 2017
   • 6 replies
   • 3.6k views
   • 
   • Commander
   • June 29, 2017

4. Golden Eggs

   By TimeSpaceLightForce, October 1, 2016
   • 17 replies
   • 3.6k views
   • 
   • imatfaal
   • March 7, 2017

5. Weff Riddles

   By WWLabRat, September 6, 2013
   • 8 replies
   • 3.5k views
   • 
   • imatfaal
   • September 27, 2013

6. medical riddle

   By sammy7, May 27, 2012
   • 8 replies
   • 3.5k views
   • 
   • John Cuthber
   • May 29, 2012

7. Can you figure out each man's field?

   By Divagating the Future, February 16, 2012
   • 18 replies
   • 3.5k views
   • 
   • Divagating the Future
   • February 28, 2012

8. Push Paddle Handles for Doors

   By ewmon, November 10, 2011
   • 14 replies
   • 3.5k views
   • 
   • michel123456
   • November 11, 2011

9. Bears breakfast

   By TimeSpaceLightForce, March 30, 2017
   • 21 replies
   • 3.5k views
   • 
   • TimeSpaceLightForce
   • April 9, 2017

10. Very Peculiar Words

    By Silence Resonance, December 9, 2010
    • 8 replies
    • 3.5k views
    • 
    • rigney
    • December 21, 2010

11. What is the missing value in these equations?

    By Koko, February 5, 2008
    • 13 replies
    • 3.5k views
    • 
    • Koko
    • February 26, 2008

12. Numbers!

    By Ducky Havok, June 10, 2005
    • 15 replies
    • 3.5k views
    • 
    • gnpatterson
    • June 18, 2005

13. Brain teaser: travelling faster than the wind. 1 2

    By Arthur Smith, January 11, 2022
    • 44 replies
    • 3.4k views
    • 
    • md65536
    • February 10, 2022

14. criss-cross numbers puzzle.

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

15. Daedalus' Seventh Challenge

    By Daedalus, July 27, 2013
    • 5 replies
    • 3.4k views
    • 
    • Daedalus
    • August 20, 2013

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

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

17. Harder than what they Look?

    By johny123, September 20, 2005
    • 9 replies
    • 3.4k views
    • 
    • serg
    • December 12, 2005

18. question?

    By playdo, January 18, 2007
    • 19 replies
    • 3.4k views
    • 
    • Rocket Man
    • January 26, 2007

19. How many adulterous spouses?

    By Parcival, December 14, 2004
    • 18 replies
    • 3.3k views
    • 
    • Callipygous
    • February 24, 2005

20. unconventional math

    By Baby Astronaut, January 21, 2009
    • 6 replies
    • 3.3k views
    • 
    • sandy85
    • September 10, 2009

21. Daedalus' Fourth Challenge

    By Daedalus, November 7, 2011
    • 3 replies
    • 3.3k views
    • 
    • Daedalus
    • November 29, 2011

22. 4d and 5d rubik's cubes

    By abskebabs, June 12, 2006
    • 15 replies
    • 3.3k views
    • 
    • Ormy
    • September 12, 2006

23. Bacteria in a glass !

    By Sriman Dutta, October 24, 2016
    • 21 replies
    • 3.3k views
    • 
    • StringJunky
    • October 26, 2016

24. Math - number "7"

    By do9bvanc, October 27, 2007
    • 2 replies
    • 3.3k views
    • 
    • supernova
    • November 5, 2007

25. Timeless universe

    By Fred56, November 2, 2007
    • 16 replies
    • 3.3k views
    • 
    • Klaynos
    • February 24, 2008