Cipher Challenge
Beneath the Cobblestones
Introduction
This Challenge explores how pipes, cables, tunnels, foundations, and abandoned structures accumulate beneath city streets.
Count overlapping units and compare their distributions.
Live output1,894 overlapping units
| Unit | Count | Share | Rank |
|---|---|---|---|
| U | 270 | 14.3% | 1 |
| C | 173 | 9.1% | 2 |
| F | 165 | 8.7% | 3 |
| A | 147 | 7.8% | 4 |
| E | 143 | 7.6% | 5 |
| W | 142 | 7.5% | 6 |
| Q | 114 | 6.0% | 7 |
| Z | 112 | 5.9% | 8 |
| R | 85 | 4.5% | 9 |
| J | 79 | 4.2% | 10 |
| M | 66 | 3.5% | 11 |
| N | 62 | 3.3% | 12 |
1
GUWUCFM C RQFH AFEUUF, ASCRU QA
26
ECEUNH ZELCWQDUJ CA WUCFNH CA
51
C KZJUEW SNCW ATLLUAFA. YCFUE
75
SQSUA, AUYUEA, LCA KCQWA,
94
UNURFEQR RCGNUA,
108
RZKKTWQRCFQZW JTRFA,
126
JQAFEQRF MUCFQWL, CWJ
144
FECWASZEF FTWWUNA KCH ZRRTSH
169
AUIUECN JUSFMA. ZNJUE
187
VZTWJCFQZWA, VQNNUJ RUNNCEA,
211
YUNNA, CWJ CGCWJZWUJ FECRPA
234
EUKCQW GUFYUUW FMUK. UIUEH
256
LUWUECFQZW CJJA AHAFUKA
277
CRRZEJQWL FZ FMU AFCWJCEJA
300
CWJ WUUJA ZV QFA ZYW FQKU, ZVFUW
325
YQFMZTF EUKZIQWL YMCF QA WZ
348
NZWLUE TAUJ. UIUW UKSFH
367
RZWJTQFA KCH GU EUFCQWUJ
388
GURCTAU ZSUWQWL FMU AFEUUF
411
CLCQW YZTNJ GU UOSUWAQIU CWJ
435
JQAETSFQIU.
445
EURZEJA MUNS, GTF FMUH CEU WZF
469
RZKSNUFU UIQJUWRU. C JECYQWL
493
KCH AMZY FMU QWFUWJUJ EZTFU
516
ECFMUE FMCW FMU EZTFU
534
CRFTCNNH GTQNF. EUSCQEA RCW
557
KZIU C SQSU CEZTWJ CW ZGAFCRNU
582
YQFMZTF SEZJTRQWL CW
600
CRRTECFU EUIQAQZW. EUVUEUWRU
625
SZQWFA JQACSSUCE YMUW
644
GTQNJQWLA CEU EUSNCRUJ ZE
666
AFEUUF NUIUNA RMCWLU. TWQFA,
689
AHKGZNA, CWJ RZZEJQWCFU
709
AHAFUKA CNAZ ICEH GUFYUUW
731
ZELCWQDCFQZWA. UWLQWUUEA
753
FMUEUVZEU FEUCF CERMQIU
774
SNCWA CA C AFCEFQWL
790
MHSZFMUAQA FMCF KTAF GU
810
RMURPUJ ZW AQFU.
823
AUIUECN KUFMZJA RCW NZRCFU
846
GTEQUJ VUCFTEUA YQFMZTF
867
ZSUWQWL FMU YMZNU AFEUUF.
888
AQLWCN FECWAKQFFUEA RCW
909
FECRU RZWJTRFQIU RCGNUA CWJ
933
SQSUA. LEZTWJ-SUWUFECFQWL
955
ECJCE KCH EUIUCN RMCWLUA QW
978
KCFUEQCN, CNFMZTLM YUF RNCH,
1001
EUQWVZERQWL AFUUN, CWJ
1020
REZYJUJ LEZTWJ RCW KCPU QFA
1043
QKCLUA JQVVQRTNF FZ
1060
QWFUESEUF. AKCNN QWASURFQZW
1084
SQFA RZWVQEK JUSFM CWJ
1103
SZAQFQZW YMUEU UORCICFQZW
1126
YQNN CSSEZCRM C ATASURFUJ
1148
AUEIQRU. WZWU ZV FMUAU KUFMZJA
1173
LTCECWFUUA FMCF UIUEH MCDCEJ
1198
MCA GUUW VZTWJ.
1210
ZSUWQWL FMU AFEUUF REUCFUA
1233
CWZFMUE AUF ZV RZWAFECQWFA.
1256
FECVVQR, JUNQIUEQUA,
1273
SUJUAFEQCWA, UKUELUWRH
1293
CRRUAA, WZQAU, CWJ YZEPQWL
1314
MZTEA CVVURF FMU AUBTUWRU ZV
1338
RZWAFETRFQZW. C AMCNNZY RCGNU
1363
KCH WUUJ ATSSZEF YMQNU
1382
YZEPUEA EUCRM C JUUSUE AUYUE.
1406
TWUOSURFUJ KCAZWEH RCW
1426
EUBTQEU C WUY JUAQLW, YMQNU
1448
CERMCUZNZLQRCN EUKCQWA KCH
1472
SCTAU YZEP TWFQN FMUH CEU
1493
EURZEJUJ. FMU ACVUAF AZNTFQZW
1518
QA WZF CNYCHA FMU AMZEFUAF
1540
EZTFU.
1545
YMUW FMU YZEP QA VQWQAMUJ,
1566
CRRTECFU EURZEJA CEU C VZEK ZV
1591
QWVECAFETRFTEU FMUKAUNIUA.
1615
ATEIUHUJ SZAQFQZWA,
1632
SMZFZLECSMA, KCFUEQCN
1651
ASURQVQRCFQZWA, CWJ WZFUA
1673
CGZTF CGCWJZWUJ VUCFTEUA
1695
EUJTRU TWRUEFCQWFH VZE FMU
1718
WUOF SEZXURF. KCEPUEA CWJ
1739
UNURFEZWQR EURZEJA KTAF
1760
AMCEU AFCGNU EUVUEUWRU
1780
SZQWFA AZ NCFUE REUYA RCW VQWJ
1805
YMCF YCA KUCATEUJ. C EUSCQEUJ
1829
ATEVCRU MQJUA FMU YZEP CLCQW,
1853
GTF QF AMZTNJ WZF UECAU YMCF
1876
YCA NUCEWUJ GUWUCFM QF.
Compare word shapes, terminals, contacts, and reversals.
Live output340 words · 241 distinct
| Word | Pattern | Count | Start positions |
|---|---|---|---|
FMU | 1.2.3 | 12 | 288, 402, 500, 526, 874, 1217 +6 |
C | 1 | 11 | 8, 51, 485, 561, 781, 1138 +5 |
CWJ | 1.2.3 | 11 | 141, 216, 300, 432, 696, 930 +5 |
KCH | 1.2.3 | 6 | 160, 375, 493, 960, 1363, 1469 |
RCW | 1.2.3 | 6 | 554, 837, 906, 1033, 1423, 1798 |
AFEUUF | 1.2.3.4.4.2 | 5 | 13, 405, 666, 882, 1220 |
ZV | 1.2 | 5 | 308, 1159, 1243, 1336, 1589 |
QA | 1.2 | 4 | 24, 344, 1518, 1556 |
CEU | 1.2.3 | 4 | 463, 653, 1490, 1581 |
CA | 1.2 | 3 | 41, 49, 779 |
YQFMZTF | 1.2.3.4.5.6.3 | 3 | 325, 582, 860 |
YMCF | 1.2.3.4 | 3 | 340, 1805, 1872 |
Terminals
| Sequence | Initial | Final |
|---|---|---|
FM | 21 | 3 |
UJ | 0 | 20 |
EU | 19 | 9 |
FMU | 18 | 12 |
WJ | 0 | 15 |
CW | 14 | 10 |
UA | 0 | 14 |
KC | 12 | 0 |
MU | 2 | 12 |
QWL | 0 | 12 |
WL | 0 | 12 |
CWJ | 11 | 11 |
Contacts
| Letter | Left | Right |
|---|---|---|
A | 18: U 22, W 14, C 11, Q 11, F 10, E 8, J 8, T 6, N 5, H 3, K 3, M 2, Z 2, A 1, G 1, L 1, P 1, Y 1 | 12: F 22, U 14, Q 8, M 6, T 6, S 5, Z 4, H 3, C 2, K 2, A 1, E 1 |
B | 1: U 2 | 1: T 2 |
C | 20: E 20, K 16, R 15, M 13, U 13, F 6, N 6, L 5, S 4, Y 4, J 3, Q 3, A 2, D 2, G 2, I 2, T 2, W 2, V 1, Z 1 | 19: W 34, F 29, E 19, N 13, R 13, A 11, Q 10, H 8, G 7, L 3, S 3, V 3, J 2, T 2, D 1, I 1, P 1, U 1, Y 1 |
D | 2: Q 2, C 1 | 2: C 2, U 1 |
E | 13: U 31, Z 21, C 19, F 19, T 10, Q 4, S 4, L 3, R 3, A 1, J 1, V 1, W 1 | 17: U 45, C 20, Z 11, A 8, J 8, Q 7, P 6, F 5, H 4, L 3, R 3, T 3, I 2, K 2, W 2, S 1, V 1 |
F | 14: C 29, A 22, Q 15, U 15, R 13, T 10, W 8, Z 7, E 5, S 4, N 3, F 1, O 1, V 1 | 12: M 34, U 26, E 19, Q 18, A 10, C 6, T 5, H 3, Z 3, Y 2, F 1, N 1 |
G | 3: C 7, K 1, Z 1 | 6: U 9, T 5, N 4, C 2, Z 2, A 1 |
H | 9: C 8, E 4, A 3, F 3, N 3, U 3, M 1, R 1, S 1 | 4: A 3, K 1, S 1, U 1 |
I | 6: U 9, Q 5, E 2, Z 2, C 1, N 1 | 3: U 15, Q 4, C 2 |
J | 9: U 23, W 23, E 8, N 4, Z 4, C 2, Q 2, J 1, Y 1 | 8: U 13, A 8, Q 7, T 5, C 3, Z 2, E 1, J 1 |
K | 7: U 9, A 2, E 2, Q 2, Z 2, H 1, K 1 | 9: C 16, U 5, A 3, T 3, Z 3, S 2, G 1, K 1, Q 1 |
L | 7: W 17, C 3, E 3, Q 2, T 2, Z 2, L 1 | 9: U 7, C 5, E 3, Q 2, W 2, A 1, L 1, M 1, T 1 |
Reversals
EU 45 · UE 31QW 33 · WQ 9FU 26 · UF 15CE 19 · EC 20UW 22 · WU 17AU 14 · UA 22CW 34 · WC 2JU 13 · UJ 23CF 29 · FC 6FQ 18 · QF 15AF 22 · FA 10EZ 11 · ZE 21A
B
Plain
ABCDEFGHIJKLMNOPQRSTUVWXYZThe cipher alphabet must contain exactly 26 letters.