Experiment 144
F1.2 at 13 and 16. 0143 measured design 2 on two free alphabets (Quagmire IV): planted English beat all five of its kept-place copies 5 of 5 times at 13 and 4 of 5 at 16 (bar 4); length 8 did not finish. Here K4 runs at 13 and 16 against 12 copies of K4 made the same way (carved letters kept at the 24 known places, the other 73 shuffled), from K4's own exact witness (0123's decider).
What the method does with the 24 known letters.
With two scrambled alphabets, one for the messagethe message The 97 letters of English that Jim Sanborn wrote and enciphered. and one for the carved lettersthe carved letters The 97 letters cut into the copper at the CIA, shown at the top of every experiment page., the search noticed planted English nearly every time at key lengths 13 and 16. Now it runs on the carved text at those lengths, against copies of the carved text that keep the letters at the 24 known places and scramble the rest.
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.
With two scrambled alphabets, design 2 noticed planted English against copies of itself 5 times in 5 at length 13 and 4 in 5 at 16 (0143). The same comparison is now made for the carved text.
12 copies of K4 keep its carved letters at the 24 known places and shuffle the other 73; one exact pair of alphabets fits them all and starts every search.
K4 ranks 13 of 13 at length 13 and 7 of 13 at 16: both lengths closed at the measured strength.
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.
key length 23, Beaufort form: K4 in rows of 23; each column is one key slot
O B K R U O X O G H U L B S O L I F B B W F L
R V Q Q P R N G K S S O T W T Q S J Q S S E K
Z Z W A T J K L U D I A W I N F B N Y P V T T
M Z F P K W G D K Z X T J C D I G K U H U A U
E K C A R
the seven checks every move keeps (place(carved) + place(known) equal within a column):
column 0: R+S (24) = M+C (70)
column 1: V+T (25) = Z+L (71)
column 2: Q+N (26) = F+O (72)
column 3: Q+O (27) = P+C (73)
column 4: P+R (28) = K+K (74)
column 21: F+E (22) = T+I (68)
column 22: L+A (23) = T+N (69)
Family, key space, the constraint under test, and the clues it reads.
C27(c), C1(b). Model: 0123's Quagmire IV, C(c) = P(p) + k[i mod L], two unknown bijections, L 13 (11 checks) and 16 (8 checks); 0123 found K4 consistent at both. Search: 0143's compiled tempering over both alphabets, 10 runs x 16 replicas x 625 rounds x 1,000 moves per text, start from an exact witness randomised by 400 check-keeping swaps. Copies: K4's carved letters kept at the 24 known places, the other 73 shuffled (seed 144); they share K4's witness. Rule fixed before the run: K4 above all 12 copies at a length stops the queue for replication; otherwise that length closes, sampled at the power measured in 0143 (5/5 at 13, 4/5 at 16, against 5 copies).
Written before the run; the result decides it.
K4 inside its copies at both lengths; F1.2 at 13 and 16 closes sampled. No reading.
The harness's record: candidates, gates, loss, and the negative result this experiment leaves behind.
L13: K4 -5.116 rank 13 of 13; L16: K4 -4.669 rank 7 of 13; stop False
What was searched, as the harness recorded it.
DBUGHHPROLEITEDREOFVIEASTNORTHEASTLYOWNENWASINENOHWCITAFFMYSBURBERLINCLOCKOBAYGUIORYFAKELYUSFUMWOKDOWBOOFGOLPREATINCEREASTNORTHEASTYIRTIDONTTOSTENEETSBEIPHYAVAMBERLINCLOCKYWASTILINGLDPREVELOSINPHow this experiment sits among the others is on the lineage page; its family's open hypotheses are on the families page.