Passenger routing gets trickier at Level 2172, a standard-difficulty puzzle well into late-game territory where each level is a serious test of skill. Each vehicle has limited capacity, so the order you fill them in matters.
Count the passengers per vehicle before making your first move so you know exactly how much room you have.
Boards shift between attempts, which is why one walkthrough cannot cover every variation. The solver exists to match your specific arrangement.
This reference page helps you verify the right walkthrough for your board. If your layout looks different, the solver can match your exact arrangement.
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