OpenAIVerified interview challenge
Build a grid infection simulator
Extend one grid simulation as infection, immunity and recovery rules become more demanding.
Unlock with Full AccessThe challenge
Start with basic infection spread, then carry the implementation into parts with immunity and timed recovery. Updates happen simultaneously within each tick, so state changes must not leak into neighbouring calculations too early. Later variations build on the shared parts, with guided practice and a timed mock available.
What you'll practise
Tick boundaries
Keep the current and next state consistent across all cells.
Evolving state rules
Extend the simulation without losing the timing and behaviour of earlier parts.
Current partFurther parts unlock as you progress
solution.pyPython 3.13
# Build on your implementation
# Run checks for the current part
# Full starter code includedCurrent-part checks
Run your code to see results.
The complete sequence, starter code and checks are included with Full Access.