## Problem 266 — rank:289

**Title:** Optimal chassis selection

**Added binding assumptions (LaTeX):**

```latex
Restrict deployment to product/environment pairs with at least one feasible host, or introduce a no-feasible-host abstention outcome and its loss. The selected host itself must meet feasibility constraints; an unconstrained high-utility choice is not comparable to the feasible oracle. Fix the panel and comparative optimization effort, and distinguish expected regret from a high-probability per-product certification.
```

**Direct edits:** 0. **Fresh external checks:** None; supplied sources retained as provenance.