Brain Teasers and Puzzles

639 topics in this forum

1. Recuurence of an event

   By sarahenry, October 15, 2011
   • 9 replies
   • 2.3k views
   • 
   • John Cuthber
   • March 23, 2012

2. What is this?

   By zapatos, March 5, 2012
   • 0 replies
   • 1.1k views
   • 
   • zapatos
   • March 5, 2012

3. How much faster is my car than yours?

   By Divagating the Future, February 26, 2012
   • 16 replies
   • 2.3k views
   • 
   • Spyman
   • March 5, 2012

4. my Cool Brain teaser game!

   By MartinK84, February 27, 2012
   • 3 replies
   • 1.9k views
   • 
   • CaptainPanic
   • March 2, 2012

5. Your favorite logic puzzles 1 2 3

   By Antti, February 2, 2012
   • 63 replies
   • 8.7k views
   • 
   • Spyman
   • February 29, 2012

6. A riddle

   By md65536, August 20, 2011
   • 13 replies
   • 2.9k views
   • 
   • Phi for All
   • February 28, 2012

7. Togetherness

   By hypervalent_iodine, February 24, 2012
   • 12 replies
   • 2.3k views
   • 
   • hypervalent_iodine
   • February 28, 2012

8. what's the answer?

   By First↔Cause ♀, February 12, 2012
   • 23 replies
   • 4.2k views
   • 
   • Phi for All
   • February 28, 2012

9. 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

10. Variation of the blue-eyed islanders puzzle.

    By md65536, February 15, 2012
    • 1 reply
    • 1.8k views
    • 
    • md65536
    • February 28, 2012

11. co-orninates

    By buttercup2daisy1, February 21, 2012
    • 5 replies
    • 6.5k views
    • 
    • buttercup2daisy1
    • February 26, 2012

12. Quiz

    By rigney, February 10, 2012
    • 6 replies
    • 1.6k views
    • 
    • rigney
    • February 10, 2012

13. Black and Red

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

14. The Bus Driver

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

15. Which door should you take? 1 2 3

    By TonyMcC, January 8, 2011
    • 67 replies
    • 16.6k views
    • 
    • rigney
    • January 29, 2012

16. A brain teaser

    By NotanOriginalName, January 24, 2012
    • 5 replies
    • 3.3k views
    • 
    • michel123456
    • January 25, 2012

17. Terahertz Shielding

    By Citizen, July 27, 2010
    • 12 replies
    • 3.2k views
    • 
    • John Cuthber
    • January 18, 2012

18. ball on a ramp

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

19. Cattle Market puzzle

    By Gabe, June 20, 2011
    • 5 replies
    • 4.9k views
    • 
    • vignesh3790
    • December 17, 2011

20. Car purchase with conditions

    By Loser2, November 6, 2011
    • 2 replies
    • 1.2k views
    • 
    • random
    • December 9, 2011

21. Challange to find outcome

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

22. Brownies

    By zapatos, November 29, 2011
    • 7 replies
    • 4.9k views
    • 
    • michel123456
    • November 29, 2011

23. Daedalus' Fourth Challenge

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

24. River Crossing Riddle

    By RVJ, October 22, 2011
    • 5 replies
    • 21.2k views
    • 
    • superball
    • November 21, 2011

25. Impossible Brain Teaser? 1 2

    By Luminal, July 25, 2007
    • 39 replies
    • 49.4k views
    • 
    • imatfaal
    • November 14, 2011