Mostly efficient and assumes competence rather than explaining basics, but verbatim ISTQB syllabus quotes ('a state diagram models the behavior of a system by showing its possible states...') and dated provenance notes ('fetched 2026-06-10', 'v4.0.1 (2024-09-15)') add tokens that could be trimmed. It is not anchor 3 because not every token earns its place; it is not anchor 1 because it is not padded with beginner-level concept explanations.

Provides concrete copy-ready artifacts: a valid-transition table (t1-t9), a full state table with '--' empty cells, and step-by-step Action/Expected-result tables for TC-ST-1/2/3, TC-INV-1/2, and TC-SW-1. It is not anchor 2 because the guidance is complete and executable rather than pseudocode or missing key details.

A clearly labeled 5-step sequence carries one worked example through every step, with explicit checkpoints: 'Every step asserts the resulting observable state, never just action accepted', the one-invalid-transition-per-TC defect-masking warning, and the anti-patterns table as a checklist. It is not anchor 2 because validation/checkpoint guidance is explicit, not merely listed.

No bundle files exist, and the body is organized into clearly signaled sections (Overview, When to use, Steps 1-5, Anti-patterns, Limitations, References) with one-level-deep links to sibling skills and external PDFs. Per the simple-skills note, a self-contained well-organized skill scores 3; it is not anchor 2 because it is not a monolithic wall and references are clearly signaled rather than nested.

Lists multiple concrete actions - 'identify states, events, transitions, and guard conditions', 'draw the state table including invalid (empty-cell) transitions', 'choose a coverage level', 'derive one test case per coverage item' - matching the anchor for multiple specific concrete actions. It is not anchor 2 because the actions enumerate the full derivation workflow comprehensively rather than naming only some.

Explicitly answers both what ('Derives human-readable manual test cases...') and when ('Use for lifecycle entities... where the response to an event depends on the current state'), matching the anchor for clearly answering both with explicit triggers. It is not anchor 2 because the 'Use for' trigger clause is present and explicit, not merely implied.

Includes natural phrasings a QA user would voice - 'lifecycle entities (accounts, orders, subscriptions), workflows, and UI wizards where the response to an event depends on the current state'. It is not anchor 2 because these are common natural variations rather than only jargon, though a few obvious terms like 'state machine testing' live in metadata keywords rather than the prose.

Carves a clear niche - 'A deep single-technique walkthrough rather than a broad multi-lens case matrix; the output is manual step/expected cases rather than parameterized test code' - and the stateful-behavior trigger separates it from stateless skills. It is not anchor 2 because it actively disambiguates from sibling techniques, making wrong-skill triggering unlikely.