Brain Teasers and Puzzles

639 topics in this forum

1. Find the weights

   By Acme, February 12, 2014
   • 8 replies
   • 2.3k views
   • 
   • imatfaal
   • April 1, 2014

2. Magnet and iron rod 1 2

   By Rajnish Kaushik, January 26, 2014
   • 27 replies
   • 4.9k views
   • 
   • John Cuthber
   • February 2, 2014

3. weird sequence

   By numcaps, June 25, 2013
   • 6 replies
   • 2.7k views
   • 
   • cresol
   • January 28, 2014

4. What two numbers are missing in this series?

   By ElijahCross, October 3, 2013
   • 9 replies
   • 2.3k views
   • 
   • pears
   • November 18, 2013

5. rhymes with "False" 1 2

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

6. Daedalus' Ninth Challenge

   By Daedalus, October 6, 2013
   • 22 replies
   • 5.3k views
   • 
   • Daedalus
   • October 21, 2013

7. Daedalus' Eighth Challenge

   By Daedalus, September 20, 2013
   • 21 replies
   • 4.8k views
   • 
   • Unity+
   • September 30, 2013

8. Weff Riddles

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

9. Tricks

   By gwiyomi17, May 24, 2013
   • 7 replies
   • 2.5k views
   • 
   • Ihcisphysicist
   • September 8, 2013

10. A game of Abstract Logic

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

11. Laser Switch

    By TimeSpaceLightForce, November 30, 2012
    • 15 replies
    • 2.9k views
    • 
    • TimeSpaceLightForce
    • September 1, 2013

12. The 16 fundamental logical operators

    By Jerry Wickey, August 31, 2013
    • 0 replies
    • 5.2k views
    • 
    • Jerry Wickey
    • August 31, 2013

13. Daedalus' Seventh Challenge

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

14. Who Really Shot first?

    By hypervalent_iodine, July 31, 2013
    • 5 replies
    • 2.1k views
    • 
    • Delta1212
    • August 1, 2013

15. A phenomenal mathematical riddle involving the axiom of choice

    By Jrthedawg, July 22, 2013
    • 1 reply
    • 2.2k views
    • 
    • imatfaal
    • July 22, 2013

16. Daedalus' Sixth Challenge 1 2

    By Daedalus, July 13, 2013
    • 25 replies
    • 7.2k views
    • 
    • Delta1212
    • July 20, 2013

17. REAL Einstein puzzle

    By EquisDeXD, October 3, 2012
    • 6 replies
    • 3.2k views
    • 
    • ydoaPs
    • July 6, 2013

18. Magic switchbox...

    By Externet, June 12, 2013
    • 6 replies
    • 2.7k views
    • 
    • michel123456
    • June 14, 2013

19. insight problem 2

    By daniton, June 12, 2013
    • 3 replies
    • 1.5k views
    • 
    • daniton
    • June 14, 2013

20. Story riddle

    By questionposter, April 22, 2012
    • 23 replies
    • 5.2k views
    • 
    • jimmyjammy
    • June 14, 2013

21. Insight Problem

    By daniton, May 26, 2013
    • 7 replies
    • 2.3k views
    • 
    • michel123456
    • May 29, 2013

22. LR puzzle

    By staffingby, April 1, 2013
    • 16 replies
    • 7.2k views
    • 
    • md65536
    • May 12, 2013

23. Daughter(s)

    By ydoaPs, January 9, 2013
    • 10 replies
    • 2.7k views
    • 
    • MonDie
    • April 15, 2013

24. Bug on a Band

    By elfmotat, March 4, 2013
    • 7 replies
    • 5.9k views
    • 
    • King Thando Mathe
    • April 3, 2013

25. Escaped cow puzzle 1

    By md65536, June 22, 2012
    • 22 replies
    • 8.3k views
    • 
    • Consistency
    • February 27, 2013