Cutset

Cutset is a logic puzzle about shutting down industrial pipe networks. You cut pipes or close valves, tracing every route from a source to a sink and managing the fuel your torch uses. Each level has exactly enough fuel for one unique, provably optimal shutoff, calculated before the level enters the game. There is no partial credit: if your plan is not optimal, the water keeps running.

Plan each shutoff

Thicker materials use more fuel, while steel pipes cannot be cut. Each operation asks whether its fuel cost is justified by the routes it stops. A route may look promising, but the total cost still has to fit the available fuel.

80 pipe networks

The game has 80 levels, beginning with seven compact introductions. The networks then grow from 8 junctions to as many as 40. Valves, uncuttable steel, and multiple sources and sinks change what an efficient shutoff requires.

Achievements

Nine Steam achievements mark specific first cuts and combinations of pipe and valve work. The final achievement is for clearing all 80 levels.