Anti-repeat and fallbacks

Anti-repeat memory reduces repeated answers and repeated challenge shapes across the configured history scope. Cadence suppression also prevents a run of puzzles from feeling mechanically identical.

The system can relax constraints when the eligible pool is too small. A fallback is therefore a diagnostic signal, not automatically a generation failure. Investigate the configured scope, content pool size, season boundaries, and recent answer history before changing thresholds.

Common symptoms and resolutions are collected in Generation troubleshooting.