Brain Teasers and Puzzles

653 topics in this forum

1. Quiz

   By rigney, February 10, 2012
   • 6 replies
   • 1.8k views
   • 
   • rigney
   • February 10, 2012

2. Black and Red

   By rigney, February 3, 2012
   • 1 reply
   • 1k views
   • 
   • rigney
   • February 8, 2012

3. The Bus Driver

   By megachirops, February 4, 2012
   • 4 replies
   • 8.3k views
   • 
   • searchingfortruth
   • February 6, 2012

4. Which door should you take? 1 2 3

   By TonyMcC, January 8, 2011
   • 67 replies
   • 18.3k views
   • 
   • rigney
   • January 29, 2012

5. A brain teaser

   By NotanOriginalName, January 24, 2012
   • 5 replies
   • 3.5k views
   • 
   • michel123456
   • January 25, 2012

6. Terahertz Shielding

   By Citizen, July 27, 2010
   • 12 replies
   • 3.4k views
   • 
   • John Cuthber
   • January 18, 2012

7. ball on a ramp

   By michel123456, November 12, 2011
   • 23 replies
   • 6.5k views
   • 
   • michel123456
   • January 10, 2012

8. Cattle Market puzzle

   By Gabe, June 20, 2011
   • 5 replies
   • 5.5k views
   • 
   • vignesh3790
   • December 17, 2011

9. Car purchase with conditions

   By Loser2, November 6, 2011
   • 2 replies
   • 1.3k views
   • 
   • random
   • December 9, 2011

10. Challange to find outcome

    By superball, November 25, 2011
    • 1 reply
    • 1.2k views
    • 
    • md65536
    • December 4, 2011

11. Brownies

    By zapatos, November 29, 2011
    • 7 replies
    • 5.4k views
    • 
    • michel123456
    • November 29, 2011

12. Daedalus' Fourth Challenge

    By Daedalus, November 7, 2011
    • 3 replies
    • 3.5k views
    • 
    • Daedalus
    • November 29, 2011

13. River Crossing Riddle

    By RVJ, October 22, 2011
    • 5 replies
    • 22.3k views
    • 
    • superball
    • November 21, 2011

14. Impossible Brain Teaser? 1 2

    By Luminal, July 25, 2007
    • 39 replies
    • 52.8k views
    • 
    • imatfaal
    • November 14, 2011

15. Push Paddle Handles for Doors

    By ewmon, November 10, 2011
    • 14 replies
    • 3.8k views
    • 
    • michel123456
    • November 11, 2011

16. 4 triangles

    By MigL, July 30, 2011
    • 13 replies
    • 5.4k views
    • 
    • Appolinaria
    • November 8, 2011

17. Box in a house. 1 2

    By small bang, October 26, 2011
    • 33 replies
    • 6.1k views
    • 
    • md65536
    • November 4, 2011

18. Rime Royal

    By hypervalent_iodine, November 3, 2011
    • 1 reply
    • 2.1k views
    • 
    • imatfaal
    • November 3, 2011

19. Try to solve it

    By fishermangeorgerando, August 14, 2011
    • 18 replies
    • 6.1k views
    • 
    • Faz
    • November 2, 2011

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

    By Fanghur, April 9, 2011
    • 20 replies
    • 6.2k views
    • 
    • Faz
    • November 1, 2011

21. Who wins this race?

    By md65536, October 20, 2011
    • 4 replies
    • 1.8k views
    • 
    • Axioms
    • October 28, 2011

22. Which has more gravitational pull, the moon or a nebula?

    By md65536, July 23, 2011
    • 5 replies
    • 3.4k views
    • 
    • md65536
    • October 19, 2011

23. plot the revenge

    By random, September 29, 2010
    • 9 replies
    • 3.6k views
    • 
    • matty
    • October 18, 2011

24. Daedalus' Second Challenge

    By Daedalus, September 29, 2011
    • 4 replies
    • 3.4k views
    • 
    • Daedalus
    • October 13, 2011

25. Daedalus' Third Challenge

    By Daedalus, October 1, 2011
    • 2 replies
    • 2.7k views
    • 
    • Daedalus
    • October 1, 2011