Weight Puzzle

There are 12 weights, all equal in weight except for one that is either heavier or lighter. Can you identify the odd one out in only 3 weighings with a balance?

Use the mouse to drag and drop weights on both sides of the scale. Then press the button in the center of the scale.

If you find the counterfeit weight, put that on the board which is above the scale and press the button at right to check if you are right.

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