Experiment 183
F2.3. Not a documented method: the reverse use of EMC par. 45b derived in research_notes/Scheidt patents and field ciphers/addendum_downloaded_manuals.md (issue #9), and stated as such. The plain strip is a 26-letter phrase with its repeats (NOWISTHETIMEFORALLGOODMENT...); a letter that occurs twice may be taken from either place; the cipher strip is the standard or KRYPTOS order, slid by a repeating key. Phrases: every 26-letter window of the K1, K2 and K3 plaintexts, the Morse texts, Carter's 1923 book (K3's source) and famous sentences, kept if they hold the 13 letters of the known words. At each known place the allowed key values form a set; sets intersect per key slot. Lengths 1-26, slide either way; K4 against 20 shuffled copies.
What the method does with the 24 known letters.
Write a phrase such as NOW IS THE TIME FOR ALL GOOD MEN on a strip instead of the alphabet. Letters that appear twice give the encipherer a choice, so the same plain letter can turn into different code letters, yet the messagethe message The 97 letters of English that Jim Sanborn wrote and enciphered. stays the same length. Slide the strip against an alphabet by a repeating secret wordthe secret word The word or string a cipher needs besides the method.. For each phrase from the sculpture's own texts, the 24 known lettersthe known letters Sanborn has confirmed that positions 22 to 34 of the message read EASTNORTHEAST and positions 64 to 74 read BERLINCLOCK. say which secret words remain possible.
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.
Write a phrase such as NOW IS THE TIME FOR ALL GOOD MEN on the plain strip: a letter found twice may be taken from either place, so one plain letter has several code letters and the message keeps its length. That would flatten K4's letter counts.
Every 26-letter window of the sculpture's texts and of Carter's book that holds the 13 letters of the known words, against the standard or KRYPTOS strip, either way, with a repeating key of 1-26: the known letters allow a set of key values at each place; the sets must meet in every slot.
No phrase fits K4 at any key length up to 25; at 26, with a single check, K4 fits as copies do. F2.3 closed for these phrases; any phrase at all would be a free alphabet, which the known letters cannot decide.
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.
phrase strip NOWISTHETIMEFORALLGOODMENT (lacks C, K: such a phrase is dropped)
place 22: E at strip places [7, 11, 23], carved F at 5: allowed keys [8, 20, 24]
place 23: A at strip places [15], carved L at 11: allowed keys [22]
place 24: S at strip places [4], carved R at 17: allowed keys [13]
place 25: T at strip places [5, 8, 25], carved V at 21: allowed keys [13, 16, 22]
place 26: N at strip places [0, 24], carved Q at 16: allowed keys [16, 18]
place 27: O at strip places [1, 13, 19, 20], carved Q at 16: allowed keys [3, 15, 22, 23]
place 28: R at strip places [14], carved P at 15: allowed keys [1]
place 29: T at strip places [5, 8, 25], carved R at 17: allowed keys [9, 12, 18]
Family, key space, the constraint under test, and the clues it reads.
Scheidt: 'I masked the English language' (C2): homophones flatten letter counts without lengthening the text (K4's flat counts, 0056). EMC par. 45b (keyword phrases with repeated letters for components), reversed here as a derivation (addendum, candidate 3). Model: c_i = C[(j + k_{i mod L}) mod 26] or C[(k - j) mod 26] with phrase[j] = p_i, the choice of j free. Exact: allowed k per known place = {C^-1(c) -+ j : phrase[j] = p}, intersected per slot. Statistic: live (phrase, strip, form, L) cells with at least one check, K4 against copies.
Written before the run; the result decides it.
Live cells with checks at the shuffled copies' rate; homophones loosen each check, so short lengths may survive on copies as on K4. Zero candidates.
The harness's record: candidates, gates, loss, and the negative result this experiment leaves behind.
1196 phrases; live cells K4 617 (copies 0-737); lengths where K4 is above every copy: []; plant live True
What was searched, as the harness recorded it.
THEFLAMETOFLICKERBUTPRESENHEFLAMETOFLICKERBUTPRESENTORTHEPUBLICATIONOFTHISBOOKRTHEPUBLICATIONOFTHISBOOKWINMETRESKETCHPLANOFTHETOMBNIMPORTANTBECAUSEOFTHELACKIMPORTANTBECAUSEOFTHELACKOORTANTBECAUSEOFTHELACKOFLIRTANTBECAUSEOFTHELACKOFLITANTBECAUSEOFTHELACKOFLITERNTBECAUSEOFTHELACKOFLITERARESENTTHEACTUALTOMBOFTHEKITHEFLAMETOFLICKERBUTPRESENHow this experiment sits among the others is on the lineage page; its family's open hypotheses are on the families page.