Brain Teasers and Puzzles

639 topics in this forum

1. Can YOU Crack The Carousel?

   By The Carousel, April 7, 2015
   • 0 replies
   • 1.9k views
   • 
   • The Carousel
   • April 7, 2015

2. Really HARD puzzel-HELP

   By Wlpert1, March 19, 2015
   • 15 replies
   • 4k views
   • 
   • Lightmeow
   • March 24, 2015

3. How many Solutions are there to this arithmetic sum ?

   By Commander, March 20, 2015
   • 0 replies
   • 1.4k views
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   • Commander
   • March 20, 2015

4. Daedalus' Eleventh Challenge

   By Daedalus, February 18, 2015
   • 9 replies
   • 2.9k views
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   • Daedalus
   • March 13, 2015

5. Physics Brainteaser!

   By Mr. Astrophysicist, February 22, 2015
   • 16 replies
   • 3.2k views
   • 
   • GeneralDadmission
   • February 26, 2015

6. Guess the 4 letter verb ! A challenging pastime !!

   By Commander, January 17, 2015
   • 11 replies
   • 2.7k views
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   • Commander
   • February 4, 2015

7. Anagrammatize (The Above Post)

   By MonDie, December 28, 2014
   • 7 replies
   • 2.5k views
   • 
   • Commander
   • January 17, 2015

8. LHC

   By sunshaker, December 14, 2014
   • 1 reply
   • 1.9k views
   • 
   • Sensei
   • December 20, 2014

9. Daedalus' Tenth Challenge

   By Daedalus, November 19, 2013
   • 24 replies
   • 8.8k views
   • 
   • Commander
   • December 15, 2014

10. Stretch your mind - a litle bit of fun 1 2 3 4 10

    By mossoi, November 17, 2004
    • 236 replies
    • 31.9k views
    • 
    • Commander
    • December 13, 2014

11. Can You Cross All the Seven Bridges of Konigsberg Once ?

    By Jothi, November 28, 2014
    • 5 replies
    • 3.1k views
    • 
    • Commander
    • December 13, 2014

12. Another Arithmetic Puzzle

    By Commander, December 12, 2014
    • 3 replies
    • 2.1k views
    • 
    • Robittybob1
    • December 13, 2014

13. 3 guys pay the same

    By JustinW, December 12, 2014
    • 4 replies
    • 1.7k views
    • 
    • Greg H.
    • December 12, 2014

14. A Simple Puzzle !

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

15. Geometric teaser. Construct tangens for two circles.

    By noobsaibot, October 28, 2014
    • 12 replies
    • 2.4k views
    • 
    • LaurieAG
    • November 13, 2014

16. 3D PRISM VIEWING

    By sunshaker, October 27, 2014
    • 0 replies
    • 1.7k views
    • 
    • sunshaker
    • October 27, 2014

17. Black and white illusions

    By sunshaker, October 7, 2014
    • 2 replies
    • 2.3k views
    • 
    • BrainTrainer
    • October 27, 2014

18. The Enigmatic Giant

    By LaurieAG, December 28, 2012
    • 12 replies
    • 3.7k views
    • 
    • BrainTrainer
    • October 19, 2014

19. Meet on the Bridge?

    By studiot, October 5, 2014
    • 5 replies
    • 2.6k views
    • 
    • MonDie
    • October 6, 2014

20. EInsteins Riddle, try to solve it

    By Pameff, May 19, 2014
    • 12 replies
    • 3k views
    • 
    • studiot
    • September 18, 2014

21. Word puzzle assistance?

    By Sqand, August 17, 2014
    • 1 reply
    • 1.9k views
    • 
    • hypervalent_iodine
    • August 18, 2014

22. Cambridge Brain Sciences

    By Lightmeow, December 16, 2013
    • 1 reply
    • 4.9k views
    • 
    • Iota
    • August 17, 2014

23. numbers in hexagons

    By bluedot, April 11, 2014
    • 12 replies
    • 4.8k views
    • 
    • Acme
    • July 31, 2014

24. Puzzle2

    By Chikis, June 6, 2014
    • 1 reply
    • 1.7k views
    • 
    • Chikis
    • June 8, 2014

25. Puzzle 1

    By Chikis, May 13, 2014
    • 5 replies
    • 2.1k views
    • 
    • Chikis
    • June 4, 2014