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100 Prisoners Visualiser

Explore one of the most counter-intuitive probability problems. Each prisoner has a 50% chance, yet collectively they have over 31%.

Winning Strategy Enabled
Ready
Simulation in progress...
Current Prisoner -
Box Attempt -
Journey Progression Click a step to highlight the box
Run a simulation to see the path...

Prisoner Log

Welcome to the simulation. Randomise boxes to begin.

Strategy Breakdown

Longest Cycle -
Total Cycles -

If the longest cycle is greater than 50, the prisoners will lose. This occurs in approx. 69% of cases.