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  "submitter": "David Renshaw",
  "created_at": "2026-08-27 11:43:34",
  "comments": [
    {
      "author": "David Renshaw",
      "created_at": "2026-08-27 11:43:34",
      "content": "Improved 1989 -> 2644 via a new variable-length \"violation-carrying\" simulated annealer: minimize F = mu*(number of additive-square violations) - length over moves that are sum-preserving interior transfers (w[i]+=d, w[i+g]-=d, evaluated incrementally in O(n)), plus append/drop/mutate at the ends, with periodic whole-word reversal. Key ingredients: a sawtooth temperature schedule (cool ~1.3 -> 0.07 over each ~10M-move cycle, then hold cold so violations get squeezed to zero) and a leash keeping length within ~48 of the record frontier. Unlike valid-space growth searches (population suffix regrowth etc.), this walks through invalid words, which turned out to be essential: the old 1989 word was a hard local maximum, while a fresh lineage grown from scratch by the same annealer passed it and reached 2600+. Finished with exhaustive DFS tail re-optimization (last 70 letters, both orientations). ~2 hours on 16 cores."
    }
  ]
}