Prompt
Rebuild "Deduction" as a separate, playable browser game using JavaScript, HTML, CSS, Browser. Preserve the observed gameplay: An Einstein-style logic-grid game with four, five or six houses. Mark exclusions or assert placements, apply clues and automatic elimination, use stepwise explanations and undo, and solve each uniquely determined puzzle without guessing. Use Claude Opus 5.5 only as the documented creator attribution; some games call DeepSeek at runtime, which is separate from the build-model claim. Use a scripted/demo fallback when the optional model or network is unavailable. Implement the source-observed start state, controls, rules, game-state transitions, progression and completion/failure feedback. Keep it self-contained and verify the behavior against https://github.com/swan4er/opus-100-projects/blob/main/093-deduction/README.md and https://github.com/swan4er/opus-100-projects/blob/main/093-deduction/index.html.