optical illusions, puzzles, brain teasers

















Game LinksFlash Game Menu
Musical Pitch GameIdentify the audio pitch of notes in a sequence.
Shell GameSee if you can track the coin in the moving cups!
Play PoolPractice pool on your computer.
Word UnscrambleUnscramble the letters to form a word.
Facial Memory TestIdentify and remember faces.
Count the CubesUse visual perspective to count the stacked cubes.
Picture Perception TestDetect the differences between almost-identical pictures.
Object Identification GameLocate the objects in a picture.
Knight's Tour GameNew flash twist on the Knight's Tour chess problem.
Coin-Weighing Logic ProblemFlash version of the popular Mensa-level brain teaser.
More StuffMORE FLASH GAMES on the main page!


Marble-Weighing Problem - Flash Version
Here's a free flash version of the popular Mensa-level brain teaser. You have 12 coins. They all weigh the same, except one. You don't know if that one is heavier or lighter. You have a balance scale. You can perform up to a maximum of three weighings to find out which coin has the different weight, and if it is heavier or lighter than the others.






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