# Vumarii 2019: bounded simple-English substitution audit

## Scope

This is a deliberately generous test for an additional English monoalphabetic layer: all 23 body glyph classes may map one-to-one to any 23 of the 26 Latin letters. It does **not** force the image's partial red-label alphabet, so Caesar and Atbash are subsets of the searched family. It is not a claim that the source selects English or a simple substitution.

The target contains 154 body letters from 23 glyph classes. The fixed-seed search uses 12 restarts of 7000 annealing steps and a locally preserved English tetragram model.

## Result

The highest-scoring Vumarii candidate has tetragram score `-761.052013` and is not readable English:

```text
LFO RPLI TE FRVEWOO TI CAWMI LE LANDWO ODGE DANANNA NHIM UITENA TA BRONNE PEND SPENE CERYR EJOPLI TERY CHESEL ENTEVES LANDWO OLSHON VAM DANANNA LPHIS SEMOUL ALVAS TA CHAT GAYEWR HATIZAW
```

## Matched recovery calibration

The controls are 154-letter sections of the independently reproduced `themessage` plaintext, which is not one of the books used to train the tetragram model. Each control contains exactly 23 distinct letters, is independently substituted with a fixed seed, and is attacked under the same solver settings.

| Control | Plain score | Recovered score | Exact? | Hamming distance |
| --- | ---: | ---: | --- | ---: |
| 1 | -647.811088 | -647.811088 | yes | 0 |
| 2 | -651.065456 | -649.764426 | near | 1 |
| 3 | -623.836475 | -623.836475 | yes | 0 |

The solver exactly recovers 2 of 3 controls; the least exact control differs in 1 position. That calibrates this implementation for a conventional English simple-substitution message of the same length and alphabet cardinality. It does **not** establish a negative proof: a non-English language, a keyed/polygraphic/multistage scheme, a non-letter representation, or a stronger search all remain outside this audit.

## Provenance and reproducibility

- Vumarii word-class source: `archive/gaps/tr1-00-files/vumarii2019-words.json` (SHA-256 `81262c1ca605c686da3acba6b4ac1ea2f11196cf74e530a9c71f607d0c5c76f8`).
- English model: `archive/gaps/c1-07-files/english_tetra.json` (SHA-256 `705479db53aa299ee3d4dd20db3203e09e4ce6cb7dec12ec83fb64e338974300`).
- Control source: `solution/themessage-hill-plaintext.txt` (SHA-256 `a2ccb52f5a840115ac5bd0752501f1ed1081e15663b6f33fb992a9954cd08b1f`).