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Today, 06:07 AM - Ratio-Difference Equality and Quadruplet Puzzle
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Yesterday, 06:56 PM
Toggle this category New Brain Teasers (User Submitted)
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New Logic/Math PuzzlesThey 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. |
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New Word RiddlesInductive, intuitive, but still requiring some thought (eg. riddle of the sphynx, What-Am-I riddles, anagrams, Shakeepudn's style, etc.) |
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New Optical IllusionsPost amazing illusions you have seen on the web right here. |
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Other Mind Boggling Stuff On WebAnything else on the web that is worth mentioning. |
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Toggle this category Old Brain Teasers
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Puzzles and RiddlesMy favorite puzzles sorted in several subforums. Subforums: |
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ParadoxesThe most famous paradoxes - liar paradox, barber paradox, doubtful existence of God, sentences from life, and sophisms. |
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Brain Games and OthersHints and help from other visitors. |
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Google GadgetsComments on 4 gadgets of mine - Brain Teasers, Puzzles & Riddles, Famous Optical Illusions and Chuck Norris Facts. |
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Toggle this category Miscellaneous
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GamesJoin mostly role playing games played over several days (eg. Mafia game). Subforums: |
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Homework HelpThis forum is for homework HELP.
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JokesDo you know a good joke? One that is appropriate for kids as well? Share it with the world - post it right here. |
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Comments and SuggestionsYour feedback on what to improve and any questions regarding BrainDen. |
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OthersShare your thoughts on anything else not mentioned in other categories (eg. you can discuss philosophy related questions). |
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