Run · Voynich Manuscript

T41 generation 8: equal-effort search (100 restarts + 400 hops) on the control and the structure-preserving null; control fails, programme stops

Lattice EM decipherment: sign boundaries and key learned together, with a structure-preserving null: Held-out dictionary coverage (bar 0.483) and permutation p (100 permutations); key accuracy; training log-likelihood.

Fails the control gate. With a search budget that can be repeated on the null and the manuscript, the control lands well short of the generation-7 run, so search outcomes vary more than the margin needed. Batches 2 and 3 produced nothing that passes a gate other than coverage-bar passes with 0-2 % key accuracy that then failed the null, so the programme stops here under the brief's stopping rule.control: coverage 0.376, p 0.02, key 0.440, character similarity 0.149, ll -41,159. Pseudo-Latin null, same search: coverage 0.306 (its plaintext 0.352), p 0.42, key 0.5910

Result

Run	Measured	Result	Against	Decision	Date
Run	Held-out dictionary coverage (bar 0.483) and permutation p (100 permutations); key accuracy; training log-likelihood	control: coverage 0.376, p 0.02, key 0.440, character similarity 0.149, ll -41,159. Pseudo-Latin null, same search: coverage 0.306 (its plaintext 0.352), p 0.42, key 0.591	Generation 7 (best of 400 restarts + 250 hops): coverage 0.407, key 0.691, ll -40,836	Fails the control gate. With a search budget that can be repeated on the null and the manuscript, the control lands well short of the generation-7 run, so search outcomes vary more than the margin needed. Batches 2 and 3 produced nothing that passes a gate other than coverage-bar passes with 0-2 % key accuracy that then failed the null, so the programme stops here under the brief's stopping rule.

What it used and found

Lattice EM decipherment: sign boundaries and key learned together, with a structure-preserving null

Method

MTH

Herbal A and Herbal B paragraph text: training and held-out pages

Dataset

DAT

Latin genre texts

Dataset

DAT

Naibbe cipher tables and example plaintexts (greshko/naibbe-cipher, commit 719f2f4c)

Dataset

DAT

Latin as a re-spaced homophonic stream (period practices)

Answer it tests

ANS

Parameters

pw = 0.25, hops = 400, alpha = 0.05, hop_k = 3, restarts = 100, settings = one sign per letter (as g5c), permutations = 100, restart_seeds = 8000-8099, hop_iterations = 30

Cite it

Mysteries Department. (2026). T41 generation 8: equal-effort search (100 restarts + 400 hops) on the control and the structure-preserving null; control fails, programme stops [Run RUN0DCHS8NZJZ6W]. https://mysteriesdept.com/r/RUN0DCHS8NZJZ6W

@misc{mysteriesdept_run0dchs8nzjz6w,
  title     = {T41 generation 8: equal-effort search (100 restarts + 400 hops) on the control and the structure-preserving null; control fails, programme stops},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Run, catalog key RUN0DCHS8NZJZ6W},
  url       = {https://mysteriesdept.com/r/RUN0DCHS8NZJZ6W}
}