Brain Teasers Forum: Brain Teasers Forum

New Logic/Math Puzzles

They can be logical [e.g. honestans/swindlecants or hats on death row], math [e.g. probability, sequences], physics or geometry, especially where intuition might suggest wrong answer.

• Today, 08:48 PM
• In: Algorithm 3
• By: phillip1882 

New Word Riddles

Inductive, intuitive, but still requiring some thought (eg. riddle of the sphynx, What-Am-I riddles, anagrams, Shakeepuddn's style, etc.)

• Today, 10:49 PM
• In: Treasure the Moment
• By: plainglazed 

New Optical Illusions

Post amazing illusions you have seen on the web right here.

• Today, 01:13 PM
• In: man eating
• By: NickFleming 

Other Mind Boggling Stuff On Web

Anything else on the web that is worth mentioning.

• 30 August 2010 - 04:28 AM
• In: myminicity
• By: mojobrain 

Puzzles and Riddles

My favorite puzzles sorted in several subforums.

Subforums:

1. Logic Puzzles
2. Logic Problems
3. Water and Weighing Puzzles
4. Einstein's Riddles
5. Number Puzzles
6. River Crossing Puzzles
7. Puzzle Championship Teasers
8. Geometry/Dissection Puzzles
9. Matchstick Puzzles
10. Cryptograms and Algebra Puzzles

• 05 August 2010 - 01:53 PM
• In: Cipher
• By: Polynym 

Paradoxes

The most famous paradoxes - liar paradox, barber paradox, doubtful existence of God, sentences from life, and sophisms.

• Yesterday, 01:28 AM
• In: Liar Paradox (Eubulid or Ep...
• By: flatline247 

Brain Games and Others

Hints and help from other visitors.

• Today, 03:59 PM
• In: The Malicious Undead
• By: Cavenglok 

Google Gadgets

Comments on 4 gadgets of mine - Brain Teasers, Puzzles & Riddles, Famous Optical Illusions and Chuck Norris Facts.

• Yesterday, 03:39 PM
• In: How many members found Brai...
• By: NickFleming 

Games

Join mostly role playing games played over several days (eg. Mafia game).

• Today, 10:29 PM
• In: ROLLO
• By: phaze 

Homework Help

This forum is for homework HELP.
DO NOT do others homework for them.
DO NOT ask for others to do your homework for you.

• 29 August 2010 - 10:12 PM
• In: List of Homework Helpers
• By: Blablah99 

Jokes

Do you know a good joke? One that is appropriate for kids as well? Share it with the world - post it right here.

• Today, 10:08 PM
• In: smart blonde (CLEAN JOKES O...
• By: Tribbs083 

Comments and Suggestions

Your feedback on what to improve and any questions regarding BrainDen.

• 28 August 2010 - 08:03 PM
• In: Smiley's wanted
• By: Blablah99 

Others

Share your thoughts on anything else not mentioned in other categories (eg. you can discuss philosophy related questions).

• Today, 04:53 PM
• In: Love
• By: octopuppy