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.

• 02 July 2009 - 06:05 PM
• In: excel team layout
• By: sparkee

New Word Riddles

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

• Today, 01:25 AM
• In: Lemony
• By: DudleyDude

New Optical Illusions

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

• 25 June 2009 - 10:41 AM
• In: Concave Convex
• By: frankiben123

Other Mind Boggling Stuff On Web

Anything else on the web that is worth mentioning.

• Today, 12:52 AM
• In: Pearls Before Swine
• By: Derrai

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

• 23 June 2009 - 10:07 PM
• In: Humans and Monkeys
• By: hugemonkey

Paradoxes

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

• 01 July 2009 - 01:13 PM
• In: Think about these
• By: pitt

Brain Games and Others

Hints and help from other visitors.

• 26 March 2009 - 06:19 PM
• In: Soukoban level 12- help I...
• By: IDoNotExist

Google Gadgets

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

• 29 June 2009 - 08:27 AM
• In: How many members found Brai...
• By: rohit_bd

Games

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

Subforums:

1. Goodies
2. Baddies

• Today, 02:15 AM
• In: The Mafia Game: Ocean 11 - ...
• By: Gmaster479

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.

• 26 June 2009 - 08:58 AM
• In: How To Write An Essay
• By: clozobozo

Jokes

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

• 02 July 2009 - 04:14 PM
• In: The Short Logger
• By: MrsP

Comments and Suggestions

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

• Today, 02:03 AM
• In: FORUM UPGRADE
• By: Kathleen

Others

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

• Today, 01:58 AM
• In: Phronism takes on BrainDen
• By: plasmid