Myszkowski transposition

At width 7 only, with a repeating-key Vigenere or Beaufort. The script records only whether a setting fits all 24 known letters (none did), so the best partial score shown on this page comes from an older summary and is unverified.

In plain English: At width 7 only, with a repeating-key Vigenere or Beaufort, using a columnar transposition variant where repeated keyword letters create tied columns. Every combination within the stated scope was tested (2.5 million configurations); none produced a valid solution. This record is negative within the tested scope.

NOISE Tier 2

How to read this record

Verdict – ELIMINATED (ruled out within the tested scope), NOISE (nothing beyond what chance produces for a search of this size; also shown when a record stored no verdict of its own), INCONCLUSIVE (the test left candidates or options standing, or could not decide, so it does not rule the method out), INTERESTING (slightly above random, almost certainly coincidence), SIGNAL (statistically unusual, warrants investigation), or FULL MATCH (all 24 known letters correct).
Confidence Tier – Tier 1 = mathematical proof, valid while its stated assumptions hold. Tier 2 = every possibility within the stated scope tested. Tier 3 = partially tested or sampled. Tier 4 = not yet properly tested.
Configs Tested – How many different key/parameter combinations were tried.
Best Score – How many of the 24 known plaintext letters the best attempt matched (out of 24). N/A means no such score could be read from this record.
Keystream Consistency (Bean) – Whether the key values at different positions are mathematically consistent with each other. The check only holds when the known letters stay in their carved positions (no letters rearranged or removed), and the full set used here assumes the standard A to Z alphabet.
Scope Limitations – What this elimination does not rule out.

Configs Tested: 2,459,236
Best Score: 6 / 24 known letters matched · low, no sign of a solution
Confidence: Tier 2: Exhaustive search under stated assumptions. Does not eliminate multi-layer variants.
Date Tested: 2026-02-14
Script: scripts/transposition/other/e_s_39_myszkowski.py

Scope Limitations

This elimination does not rule out:

Covers width 7 only (all 47,293 column rankings, including tied columns), with key lengths 2 to 14. Does not cover other widths.

Assumptions

Repeating-key substitution (Vigenere or Beaufort) at key lengths 2 to 14
Every ranking of 7 columns, including ties

Reproduce

PYTHONPATH=src python3 -u scripts/transposition/other/e_s_39_myszkowski.py

Requires the kryptos repo, Python 3.11+, PYTHONPATH=src. Some recent scripts may not be in the public repository yet.

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