About this puzzle

Capacity Planning — practice the decision, scored against the optimum

What does the Capacity Planning puzzle teach?

Rightsize to the demand curve — provisioning for peak wastes money, but scaling every interval pays churn.

Why do interviews ask about this?

Capacity planning (how many servers?) is the system-design sizing interview — meet the SLO at the lowest cost.

How is it scored?

The engine computes the provably-optimal answer for the exact instance you played (dynamic programming, shortest-path, or exhaustive search — never a heuristic) and scores your attempt as a percentage of it. No login needed to see your score.