# SQA Review Record: SSD-001 System Sequence Diagram

## Metadata
| Key | Value |
| --- | --- |
| ID | RC-010 |
| CrossReference | [SSD-001], [QC-SSD-001] |

## Version History
| Date | Status | Author | Reviewer | Change | Commit |
| --- | --- | --- | --- | --- | --- |
| 2026-10-04 | Accepted | Jens Tirsvad Nielsen | S01 | Initial version | pending |

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## Artifact Under Review

- Instance reviewed: [SSD-001]
- Checklist used: [QC-SSD-001]

## Checklist Results

| # | Criterion | Status | Evidence/Notes |
| --- | --- | --- | --- |
| 1 | Input/output messages match the corresponding Use Case's main success scenario step-for-step | Pass | startGame and makeGuess cover steps 1 to 7 of UC-001. |
| 2 | Actor and System are treated strictly as black boxes (system shown as `:System`) | Pass | Only Player and :System. |
| 3 | Object creation/destruction of the System instance handled explicitly where relevant (Optional) | Pass | Lifecycle notes state when the game starts and ends. |
| 4 | Return values are shown for operations that produce one, using dashed return arrows | Pass | Dashed returns on every operation. |
| 5 | Alternate/exceptional flows are represented separately (or explicitly out of scope noted) | Pass | Alternative flows noted as out of scope. |
| 6 | Message names are verb phrases consistent with the use case's system responsibilities (Optional) | Pass | startGame, makeGuess. |
| 7 | Diagram references the specific Use Case (name and ID) it depicts | Pass | Cites UC-001 Play a Game. |

## Overall Verdict

Go — all applicable criteria pass. Reviewer and author are both S01: the project has a single participant, so the framework's author/reviewer separation cannot be met. S01 accepted this deviation when requesting acceptance (2026-10-04).

## Action Items

| Action | Owner | Due |
| --- | --- | --- |
| None | — | — |

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[SSD-001]: ../../uc-001/ssd.md
[QC-SSD-001]: ../../../framework/qc/qc-ssd.md