Brain training · Deduction
Balance Scale Detective
One coin is heavier. Find it in only two weighings.
How to play Balance Scale Detective
- There are eight coins, exactly one heavier than the others.
- Tap a coin to cycle between off-scale, left pan and right pan. A valid weighing uses the same nonzero number of coins on both sides.
- Use at most two weighings, then select your final answer. Guessing ends the round.
Play using the controls above. New game starts a fresh round. Best scores are saved on this device when browser storage is available.