Three-Door Experiment
Stay or switch? Play the three-door puzzle, then test both strategies.
Your stays0 / 0
Your switches0 / 0
Try the same 1,000 cases with both strategies
How to use
Pick a door. After an empty door opens, keep your choice or switch. Try the separate 1,000-round simulation.
Use the on-screen feedback to finish the challenge.
Start a fresh round or save a result when available.
FAQ
How does it work?
Pick a door. After an empty door opens, keep your choice or switch. Try the separate 1,000-round simulation.
What should I know?
The host knows the prize location and always opens an unchosen empty door. Under those rules, switching wins in two of the three possible prize positions.
Do I need an account?
No. Game state stays in this browser. There is no server leaderboard or multiplayer synchronization.