{"id":"flip-game-length-invariant","text":"Every string returned by `generate_possible_next_moves` has the same length as the input string, since `\"--\"` replaces exactly two characters.","truth_value":"IN","source":"entries/2026/06/06/flip-game-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"flip-game-length-invariant","truth_value":"IN","reason":"premise"}]}}