- Shuffle the carved letters into a new order.
- Make every single-letter error of the shuffled copy, as for K4.
- Run the exact Hill test on each and count living settings with a check.
- Compare with K4's count.
Experiment 152
F1.6. 0151 found 257 (variant, Hill setting) pairs alive with at least one check on K4's 5,044 single-letter variants, almost all 5x5 plain with a single check, and no trifid cube. An exact fit only means something against the same test on scrambled copies; here every copy gets the same 5,044 variants and Hill settings.
What the method does with the 24 known letters.
One slip in the carved textthe carved letters The 97 letters cut into the copper at the CIA, shown at the top of every experiment page. lets some Hilla Hill cipher A cipher that turns letters into numbers, takes them two, three or four at a time, and mixes each group with a fixed table of numbers.-cipher settings fit the known lettersthe known letters Sanborn has confirmed that positions 22 to 34 of the message read EASTNORTHEAST and positions 64 to 74 read BERLINCLOCK., a few hundred times out of half a million tries. Is that more than a scrambled copy of the carved text manages? We run the identical test on ten scrambled copies.
Words in the margin are defined on the glossary page.
The carved letters go in at the top; the reading comes out at the bottom.
0151 found a few hundred Hill settings that fit K4 once one carved letter is changed. That only matters if scrambled copies manage fewer.
The same 5,044 errors of ten scrambled copies through the same exact Hill test.
Copies give 30-6384 (all 5x5 with one check); K4's 257 ranks 4 of 11: chance.
This experiment produced no candidate: the search ruled everything out before a full text was built. Its product is the bounded negative in section 7.
Redo the method on a few letters with pencil and paper.
The same steps run by the code on the real letters.
the errors tried, for every place of the copper:
wrong: place 21 W -> each of the other 25 letters
missing: place 21 deleted, the rest moves left, a filler at the end
extra: each letter inserted before place 21, the last letter pushed out
each variant through Hill 2x2-5x5 (plain, affine, every alignment, four numberings) and trifid (periods 2-15, every offset)
Family, key space, the constraint under test, and the clues it reads.
As 0151 (0105's Hill decider, sizes 2-5 plain and affine, every alignment, four numberings; a variant is a carved letter changed, deleted or inserted with the message numbering fixed). Ten shuffled coppers (seed 152). Statistic fixed before the run: alive-with-checks counts per size; K4's 0151 counts against the coppers' range; K4 above every copper in a size stops the queue for replication.
Written before the run; the result decides it.
Each copper has a similar count (a few hundred, mostly 5x5 plain with one check); K4's 257 lies inside their range in every size.
The harness's record: candidates, gates, loss, and the negative result this experiment leaves behind.
copies alive-with-checks totals [269, 123, 243, 30, 225, 366, 87, 6384, 208, 82]; K4 (0151) 257, rank 4 of 11
What was searched, as the harness recorded it.
How this experiment sits among the others is on the lineage page; its family's open hypotheses are on the families page.