Experiment 38

“A key word plus a number from the sculpture's own story: dates, the Morse counts, and 97 itself as the second component”

Same exact test as experiment 24, with the digit stream drawn from the sculpture's story instead of the K2 coordinates: the dedication date, the fall of the Wall, Carter's discovery, the Morse padding counts, the letter counts of the four parts, and 1990 itself.

revertedstatus
experiment 24parents
58 stime, all phases
0candidates
0/24known letters
1

The experiment method

What the method does with the 24 known letters.

Experiment 24 tried addingVigenere The three rules of arithmetic a table can use: add the key letter to the message letter, subtract the message letter from the key letter, or subtract the key letter from the message letter. the map coordinates to a secret word. The sculpture's story has other numbers a person would remember: the day it was unveiled, the day the Berlin Wall fell, the day Carter broke into the tomb, the little counts hidden in the Morse code outside, and the number 97 itself. We add each of these to an unknown secret word, letter by letter, and let 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. tell us what the word would have to be. If two tellings disagree, that number is out.

Words in the margin are defined on the glossary page.

1.1

The method at work

The carved letters go in at the top; the reading comes out at the bottom.

OBKRUOXOGHULBSOLIFBBWEASTNORTHEASTOTWTQSJQSSEKZZWATJKLUDIAWINFBBERLINCLOCKWGDKZXTJCDIGKUHUAUEKCARIN: THE COPPER, ALL 97 LETTERS, THE 24 KNOWN PLACES IN ACCENTthe digit key: the dedication date read as 'dedication 3 Nov 1990, dmy', repeated under the message3111990311199031119903111990311199031119903111990311199031119903111990311199031119903111990311199word lengths that survive, once the digits are taken off the forced totals2627282930nothing shorter than 26 letters survives-7-6-5-4Englishbest forced word on the copper -5.86best on a shuffled copper -5.24OUT: NO READING; NO WORD PLUS THESE DIGITS MAKES THE KNOWN LETTERSEASTNORTHEASTBERLINCLOCK
the digits

Dates and counts from the sculpture's story as a known digit key: the dedication, the fall of the Berlin Wall, Carter's breach, the Morse padding counts, the letter counts of K1 to K4.

the word

Subtracting the digits leaves the word's letters forced. Across 46,400 cases no word shorter than 26 letters fits.

the scale

The best forced word scores -5.86, below the best on a shuffled copper. None of these numbers is the second key.

2

Best candidate against the known letters

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.

3

Walkthrough, by hand

Redo the method on a few letters with pencil and paper.

  1. Read the coordinates as the digits 3 8 5 7 6 5 7 7 8 4 4 and repeat them under the message.
  2. Position 22 is E against the carved F; under the sculpture's alphabet with Vigenere the total key letter is R, index 1.
  3. The digit under position 22 at alignment 0 is the 22nd digit, 3; subtract it: index 24 is the word letter for slot 21 mod a.
  4. With a 7-letter word that is slot 0.
  5. Position 29 also uses slot 0: do the same there; the two values must agree.
  6. Go through all 24 known letters; one disagreement kills this length and alignment.
  7. A survivor's forced letters spell the word; see whether it is one the puzzle knows.
the worksheet: the first steps by hand, on squared paper
THE DIGITS UNDER THE KNOWN PLACES, READING 'DEDICATION 3 NOV 1990, DMY', ALIGNMENT 0, KRYPTOS TABLEplaceknowncarvedtotaldigittotal - digitword letter22EF1324X23AL1019C24SR21120Q25TV18117L26NQ1918M27OQ1596S28RP202YThe total is the key index that turns theknown letter into the carved one. Take off thedigit and what is left is the word's letter inthat slot; two places in one slot must agree.
4

Worked example, generated

The same steps run by the code on the real letters.

(worked_example failed: KeyError('38 57 65 77 8 44'))
5

Hypothesis, for a cryptanalyst

Family, key space, the constraint under test, and the clues it reads.

Experiment 24 killed a word plus the K2 coordinate digits under every reading. Scheidt's two-component habit (C6) admits any memorable number as the second component, and Sanborn's own anchors are dates and counts: the dedication on 3 November 1990, the Wall's fall on 9 November 1989, his Egypt trip of 1986, Carter's breach on 26 November 1922 (C13, C7), the Morse messages' E-padding counts 5, 10, 1, 7, 9 (C25), the four parts' letter counts 63, 372, 337, 97, and 97 and 98 alone (C17). Each reading, in day-month-year and year-month-day forms, is a repeating digit key d; the word key x of length 2-30 then satisfies x[i mod a] = t[i] - s d[(i + o) mod L] mod 26 at every crib, with 24 - a redundant checks. Standard or KRYPTOS alphabets, both plaintext signs, both s, every alignment; survivors have their forced word matched against the vocabulary and K1-K3 windows and scored as English against ten shuffled controls. Bounds: complete for these seventeen digit readings.

6

Prediction

Written before the run; the result decides it.

No word length under 24 survives for any reading, alignment or sign; survivors from 24 up are chance and their forced words are noise against the shuffled controls. Zero candidates pass.

7

Method

  1. List the digit readings.
  2. For each alphabet pair and plaintext sign, compute the forced total key index at each crib.
  3. For each reading, alignment, sign s and word length a, subtract the digit term and reduce to the word slot; reject on any disagreement.
  4. For survivors, read the word in the standard and KRYPTOS alphabets, match it against the vocabulary and K1-K3 windows, and score it as English.
  5. Repeat the scoring on ten shuffles of K4.
8

Result and bounds

The harness's record: candidates, gates, loss, and the negative result this experiment leaves behind.

0candidates returned
0passed every gate
0/24known letters, best
–lowest loss
34champion before

46400 cases; shortest surviving word length 26; best forced word -5.860 vs shuffled best -5.239; 0 matches.

What was searched, as the harness recorded it.

family
word key plus known digit key (K2 coordinates), additive
digit readings
dedication 3 Nov 1990, dmy
3111990
dedication, ymd
19901103
dedication, dmy padded
03111990
Wall fell 9 Nov 1989, dmy
9111989
Wall, ymd
19891109
Carter breach 26 Nov 1922, dmy
26111922
Carter, ymd
19221126
1990
1990
1989
1989
1986
1986
1922
1922
Morse E-padding counts 5 10 1 7 9
510179
Morse counts reversed
971015
letter counts 63 372 337 97
6337233797
97
97
98
98
97 and 24 known
9724
word lengths
2-30
alphabets
plain and cipher in {std, kry}; word read in std or kry
cases
46,400
survivors by word length
26
63
27
1,600
28
1,600
29
1,600
30
45
shortest surviving word length
26
best forced words
  1. score
    -5.86
    length
    29
    reading
    Morse E-padding counts 5 10 1 7 9
    offset
    0
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    PIEDFICIEYSILYVU.....DMMNTTAL
  2. score
    -6.016
    length
    27
    reading
    dedication, ymd
    offset
    2
    s
    1
    plain
    kry
    cipher
    kry
    mode
    vig
    word alphabet
    kry
    word
    RWYRDLY..YBYTHESAXEK.XCFCRH
  3. score
    -6.029
    length
    29
    reading
    1990
    offset
    0
    s
    -1
    plain
    kry
    cipher
    kry
    mode
    vig
    word alphabet
    kry
    word
    HENREEMEHIFMLAUC.....DNUNDXYX
  4. score
    -6.032
    length
    27
    reading
    dedication, ymd
    offset
    2
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    ADWENNE..WESAYSLEYKQ.FFMWPO
  5. score
    -6.054
    length
    29
    reading
    dedication, ymd
    offset
    2
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    WENNEWESAYSLEYKQ.....FFMWPOAD
  6. score
    -6.074
    length
    30
    reading
    dedication, ymd
    offset
    2
    s
    1
    plain
    kry
    cipher
    kry
    mode
    vig
    word alphabet
    kry
    word
    RDLYBYTHESAXEK.......XCFCRHRWY
  7. score
    -6.09
    length
    28
    reading
    dedication, ymd
    offset
    2
    s
    1
    plain
    kry
    cipher
    kry
    mode
    vig
    word alphabet
    kry
    word
    WYRDLY.YBYTHESAXEK...XCFCRHR
  8. score
    -6.092
    length
    27
    reading
    98
    offset
    0
    s
    -1
    plain
    std
    cipher
    kry
    mode
    beau
    word alphabet
    std
    word
    CDIAIHH..CPCQUACTIOS.YABYPR
  9. score
    -6.106
    length
    28
    reading
    Morse E-padding counts 5 10 1 7 9
    offset
    0
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    LPIEDF.ICIEYSILYVU...DMMNTTA
  10. score
    -6.121
    length
    27
    reading
    Morse E-padding counts 5 10 1 7 9
    offset
    0
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    ALPIEDF..ICIEYSILYVU.DMMNTT
  11. score
    -6.126
    length
    28
    reading
    Wall, ymd
    offset
    4
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    EPMNEF.WPASDAWMYMU...MNMITTI
  12. score
    -6.147
    length
    29
    reading
    1990
    offset
    2
    s
    -1
    plain
    std
    cipher
    std
    mode
    beau
    word alphabet
    kry
    word
    QENNEWESADIHEYKQ.....CFMWPOIN
and 3 more
shuffled control best
-5.586, -5.239, -5.629, -5.898, -5.769, -5.511, -5.83, -5.886, -5.953, -5.415
vocab matches
0

How this experiment sits among the others is on the lineage page; its family's open hypotheses are on the families page.

Rendered from the record on 2026-10-18 12:26 UTC; updated after every experiment.
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