Monty Hall Problem
Would you switch doors? Make a choice, then test both strategies.
Try it yourself
Choose a door.
Run an experiment
0 trials. Dashed lines: theory, switch 66.7%, stay 33.3%.
The host knows where the prize is, always opens empty doors, and leaves one alternative. Switching turns every initially wrong pick into a win.
How to play
Pick a door, then decide whether to switch after the host opens empty doors. Automatic trials compare both strategies on the same round.
Learn more
The host knows where the prize is, always opens empty doors, and leaves one alternative. Switching turns every initially wrong pick into a win.