# Module: `problem_stress.flat_any_open`

| | |
|---|---|
| **aspect** | `problem_stress` |
| **role** | End of round: if **any** Problem unclaimed → **each** seat +1 Stress |
| **status** | measured → reject as sole pressure (H1-A); keep for A/B |
| **legacy** | H1-A half of `h1-problem-stress` |
| **measurement** | [RPT-0004](../../../../reports/260808-clay-borg-h1-measured.md) |

**Compose with:** any `end_condition`, `problem_deal`, `attack_relief`.  
**Conflicts with:** other `problem_stress.*` modules (one per aspect).

Known result: flat tax → solve-rate collapse at 3p+ under greedy (when used alone or with H1-B).