Brain Teasers and Puzzles

639 topics in this forum

1. Daedalus' Tenth Challenge

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

2. Alice in the tunnel.

   By studiot, May 13, 2017
   • 24 replies
   • 4.2k views
   • 
   • Zolobrine
   • May 22, 2017

3. Math Puzzles

   By Ducky Havok, April 21, 2005
   • 23 replies
   • 3.7k views
   • 
   • RedAlert
   • April 22, 2005

4. Periodic Table Scrabble.

   By YT2095, August 4, 2005
   • 23 replies
   • 17.7k views
   • 
   • BrianJonsson
   • December 16, 2008

5. Puzzle

   By NPK, January 29, 2006
   • 23 replies
   • 3.8k views
   • 
   • Nevermore
   • February 3, 2006

6. hole in a cylinder

   By ishmael, January 17, 2008
   • 23 replies
   • 9k views
   • 
   • John Cuthber
   • January 23, 2008

7. ball on a ramp

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

8. what's the answer?

   By First↔Cause ♀, February 12, 2012
   • 23 replies
   • 4.1k views
   • 
   • Phi for All
   • February 28, 2012

9. Story riddle

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

10. Web maze

    By iglak, December 2, 2004
    • 22 replies
    • 6.5k views
    • 
    • Callipygous
    • February 2, 2005

11. Escaped cow puzzle 1

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

12. Daedalus' Ninth Challenge

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

13. Palindromes by multiplication

    By andreis, February 12, 2017
    • 22 replies
    • 7.3k views
    • 
    • Commander
    • April 5, 2017

14. tesseract's riddles thread

    By Tesseract, February 15, 2005
    • 21 replies
    • 6k views
    • 
    • Pre4edgc
    • February 28, 2007

15. Subliminal Messages!

    By WaR, March 16, 2006
    • 21 replies
    • 6.2k views
    • 
    • jame334
    • June 26, 2008

16. Daedalus' First Challenge

    By Daedalus, September 28, 2011
    • 21 replies
    • 5.8k views
    • 
    • Daedalus
    • September 15, 2015

17. Daedalus' Eighth Challenge

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

18. Bacteria in a glass !

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

19. Bears breakfast

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

20. Read the color, not the word.

    By radiohead, May 7, 2005
    • 20 replies
    • 6.7k views
    • 
    • Glider
    • August 28, 2005

21. Guess what im "syinag"

    By U3D, June 22, 2005
    • 20 replies
    • 4.2k views
    • 
    • herpguy
    • May 10, 2006

22. Word riddle

    By DRU, July 5, 2005
    • 20 replies
    • 4k views
    • 
    • Pre4edgc
    • March 7, 2007

23. 12,1,1,1,2,1

    By why?, December 12, 2005
    • 20 replies
    • 3.7k views
    • 
    • rakuenso
    • December 20, 2005

24. My brain hurts, not kidding

    By ecoli, November 9, 2006
    • 20 replies
    • 4.2k views
    • 
    • Drilon
    • December 27, 2006

25. 2 easy math riddles

    By coke, April 1, 2009
    • 20 replies
    • 9.2k views
    • 
    • Lkreyna2
    • October 19, 2009