Brain Teasers and Puzzles

639 topics in this forum

1. Push Paddle Handles for Doors

   By ewmon, November 10, 2011
   • 14 replies
   • 3.5k views
   • 
   • michel123456
   • November 11, 2011

2. 4 triangles

   By MigL, July 30, 2011
   • 13 replies
   • 5k views
   • 
   • Appolinaria
   • November 8, 2011

3. Box in a house. 1 2

   By small bang, October 26, 2011
   • 33 replies
   • 5.3k views
   • 
   • md65536
   • November 4, 2011

4. Rime Royal

   By hypervalent_iodine, November 3, 2011
   • 1 reply
   • 2k views
   • 
   • imatfaal
   • November 3, 2011

5. Try to solve it

   By fishermangeorgerando, August 14, 2011
   • 18 replies
   • 5.7k views
   • 
   • Faz
   • November 2, 2011

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

   By Fanghur, April 9, 2011
   • 20 replies
   • 5.7k views
   • 
   • Faz
   • November 1, 2011

7. Who wins this race?

   By md65536, October 20, 2011
   • 4 replies
   • 1.7k views
   • 
   • Axioms
   • October 28, 2011

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

   By md65536, July 23, 2011
   • 5 replies
   • 3.1k views
   • 
   • md65536
   • October 19, 2011

9. plot the revenge

   By random, September 29, 2010
   • 9 replies
   • 3.3k views
   • 
   • matty
   • October 18, 2011

10. Daedalus' Second Challenge

    By Daedalus, September 29, 2011
    • 4 replies
    • 3.1k views
    • 
    • Daedalus
    • October 13, 2011

11. Daedalus' Third Challenge

    By Daedalus, October 1, 2011
    • 2 replies
    • 2.6k views
    • 
    • Daedalus
    • October 1, 2011

12. Sorry, the Hilbert hotel is full.

    By md65536, September 1, 2011
    • 6 replies
    • 2.7k views
    • 
    • md65536
    • September 29, 2011

13. Balls and Scales riddle

    By herbbread, September 26, 2011
    • 2 replies
    • 1.8k views
    • 
    • herbbread
    • September 27, 2011

14. What time is it? 1 2

    By needimprovement, August 16, 2010
    • 34 replies
    • 8.4k views
    • 
    • apis
    • August 20, 2011

15. samurai vs ninja 1 2

    By Abreu, November 19, 2010
    • 30 replies
    • 13.4k views
    • 
    • Sciduck
    • August 5, 2011

16. The Wetter it Gets!

    By megachirops, June 27, 2011
    • 2 replies
    • 1.6k views
    • 
    • Sciduck
    • August 5, 2011

17. Lake and alge.

    By Gness, July 6, 2011
    • 7 replies
    • 2.1k views
    • 
    • John Cuthber
    • August 1, 2011

18. How to find 1 honest villager out of 99 with $100?

    By hahaputao, July 11, 2011
    • 2 replies
    • 1.5k views
    • 
    • md65536
    • July 23, 2011

19. Email

    By Brainteaserfan, July 9, 2011
    • 3 replies
    • 2.1k views
    • 
    • Cap'n Refsmmat
    • July 10, 2011

20. What becomes wetter as it dries?

    By Mandevu, June 8, 2011
    • 4 replies
    • 2.4k views
    • 
    • John Cuthber
    • June 9, 2011

21. logical paradox

    By ishmael, January 24, 2010
    • 14 replies
    • 10.3k views
    • 
    • Dekan
    • June 2, 2011

22. Dew point and humidity dilema, can you solve it? 1 2

    By Nick Phoenix, May 29, 2010
    • 28 replies
    • 9.6k views
    • 
    • John Cuthber
    • June 1, 2011

23. My Questions

    By rktpro, May 30, 2011
    • 7 replies
    • 2.3k views
    • 
    • rktpro
    • June 1, 2011

24. can you read it ?

    By Kowalski, January 22, 2011
    • 16 replies
    • 5.5k views
    • 
    • ian528
    • May 26, 2011

25. A mathematical question for you.

    By Incendia, May 22, 2011
    • 2 replies
    • 2k views
    • 
    • Incendia
    • May 22, 2011