GOAL: Maximize total steam flow from [SOURCE S] to [SINK T] and identify a valid Minimum Cut!
NO SPOILERS: Discover the true Max Flow through optimization. Pull the golden Source lever once you believe your flow is maximum and your flagged partition (S, T) is a Min Cut!
FLOW CANCELLATION: Levels begin with suboptimal flows. You will need to decrease flow on bottlenecked lines to free up alternate augmenting channels!
VALVES: Stand before a valve handle. Hold [ENTER] or [E] and press UP to open (+), or DOWN to screw closed (-).
CONSERVATION: Intermediate vats must obey Flow In = Flow Out. Imbalances cause spurting geysers or cavitation vacuum alarms.
MIN-CUT [S, T]: Flag each vat in Set S by striking it with [SPACE]. Source S is permanently in Set S; Sink T is in T.
VERIFICATION LEVER: Pull the Source lever to trigger the on-board animated demonstration calculating Flow Value and Cut Capacity.