Cutset

Every route is live. Your torch fuel is sealed.Cutset is a logic puzzle about shutting down industrial pipe networks. Cut a pipe or close a valve, then account for every route from source to sink. Thick material takes more fuel; steel pipe cannot be cut.The ration is exact. Each level has one unique, provably optimal shutoff, calculated before it ever reaches the game, and your torch carries exactly enough fuel to match it. There is no partial credit. Your plan is optimal, or the water still runs.That is where the pressure comes from. A route can look promising while its total cost still refuses to close. You may have the idea and still not finish the arithmetic. Every operation asks the same question: does this use of fuel stop enough routes to justify it?There are 80 levels in all. After seven compact introductions, the networks grow