Faultfinder

She was the only one who could read it. Now she's dead, and it's still running. A rune-tape program runs the pressure ward that keeps the Drifted City aloft. It ran correctly for eleven years. Last night it killed the engineer who maintained it. You have her listing. Her logs. Her stepper. Find the instruction that did it. You never write a line of code. You read one. Faultfinder is a deduction game with a debugger for a magnifying glass. Every case opens as three panes: her annotated listing on the left, the machine's live state in the middle, and on the right what the city actually observed. A pressure reading that held at zero for nine seconds. A door that reported closed while it stood open. Your tools are a debugger's, not a programmer's: - Step one instruction and watch exactly one thing change. - Break on a line, or on a condition: stop when PRESSURE drops below four.