Monday, September 30, 2019

cipher - Yet there is method in this Morse code


Sometimes a nonsense telegram makes much more sense after a methodical maneuver.
Here’s one for fun:



- . -.. / ... .... . . - ... / ... . -. - / .... .. ... / .- -. - /
- --- / - . . -. / ... .... . .. -.- / .. / ... .... .- -. - / .... . -..- /
... .. ... - . .-. / ... .- .-.. / .- ... / ... .... . / .. ... ... ..- . -.. /
..-. . . / ... .... .. ..-. - / .. ... / .-- . - / ... ..- . - /
. ...- . .-. / - .. -. / ... ..- .. - / . . -.- / ... .. .-. . -.


TED SHEETS SENT HIS ANT
TO TEEN SHEIK I SHANT HEX
SISTER SAL AS SHE ISSUED
FEE SHIFT IS WET SUET
EVER TIN SUIT EEK SIREN

20 5 4 0 19 8 5 5 20 19 0 19 5 14 20 0 8 9 19 0 1 14 20 0
20 15 0 20 5 5 14 0 19 8 5 9 11 0 9 0 19 8 1 14 20 0 8 5 24 0
19 9 19 20 5 18 0 19 1 12 0 1 19 0 19 8 5 0 9 19 19 21 5 4 0
6 5 5 0 19 8 9 6 20 0 9 19 0 23 5 20 0 19 21 5 20 0

5 22 5 18 0 20 9 14 0 19 21 9 20 0 5 5 11 0 19 9 18 5 14

10100 101 100 0 10011 1000 101 101 10100 10011 0 10011 101 1110 10100 0 1000 1001 10011 0 1 1110 10100 0
10100 1111 0 10100 101 101 1110 0 10011 1000 101 1001 1011 0 1001 0 10011 1000 1 1110 10100 0 1000 101 11000 0
10011 1001 10011 10100 101 10010 0 10011 1 1100 0 1 10011 0 10011 1000 101 0 1001 10011 10011 10101 101 100 0
110 101 101 0 10011 1000 1001 110 10100 0 1001 10011 0 10111 101 10100 0 10011 10101 101 10100 0
101 10110 101 10010 0 10100 1001 1110 0 10011 10101 1001 10100 0 101 101 1011 0 10011 1001 10010 101 1110

What’s that telegram really trying to tell?


Everything you need to know is below and most of the work to be done is above.




Morse Binary Morse Binary Morse Binary

A .- 1 1 J .--- 10 1010 S ... 19 10011
B -... 2 10 K -.- 11 1011 T - 20 10100
C -.-. 3 11 L .-.. 12 1100 U ..- 21 10101
D -.. 4 100 M -- 13 1101 V ...- 22 10110
E . 5 101 N -. 14 1110 W .-- 23 10111
F ..-. 6 110 O --- 15 1111 X -..- 24 11000
G --. 7 111 P .--. 16 10000 Y -.-- 25 11001

H .... 8 1000 Q --.- 17 10001 Z --.. 26 11010
I .. 9 1001 R .-. 18 10010 space 0 0

Answer



I can see how David Thomas got his answer as I worked it out and got the same answer, but as he hasn't added an explanation (he has now), this is how you get the answer:


The telegram is telling you



THE MORE MIRTH THE MERRIER



TL;DR




The morse code gives binary for the phrase




The morse code represents binary, each dash is a 1 and each dot is a 0.


Converting gives:



1 0 100 / 000 0000 0 0 1 000 / 000 0 10 1 / 0000 00 000 / 01 10 1 / 1 111 / 1 0 0 10 / 000 0000 0 00 101 / 00 / 000 0000 01 10 1 / 0000 0 1001 / 000 00 000 1 0 010 / 000 01 0100 / 01 000 / 000 0000 0 / 00 000 000 001 0 100 / 0010 0 0 / 000 0000 00 0010 1 / 00 000 / 011 0 1 / 000 001 0 1 / 0 0001 0 010 / 1 00 10 / 000 001 00 1 / 0 0 101 / 000 00 010 0 10



Squishing that together gives:




10100 / 0000000001000 / 0000101 / 000000000 / 01101 / 1111 / 10010 / 0000000000101 / 00 / 000000001101 / 000001001 / 0000000010010 / 000010100 / 01000 / 00000000 / 000000000010100 / 001000 / 00000000000101 / 00000 / 01101 / 00000101 / 000010010 / 10010 / 000001001 / 00101 / 00000010010



Removing the slashes and leading zeroes, and also for any word which is comprised of only 0s, replacing it with a / to make it easier to read gives:



10100 1000 101 / 1101 1111 10010 101 / 1101 1001 10010 10100 1000 / 10100 100 101 / 1101 101 10010 10010 1001 101 10010



Now converting from binary using the table, and the / as a space gives the final phrase:



THE MORE MIRTH THE MERRIER




Red Herrings


The red herring that threw me and Gareth in chat off to start:



There are 26 words in the question, which we thought might correspond to the alphabet.



And another red herring which initially convinced Gareth to post an answer is that



The first part of the morse is -.-.. which matches the first piece of binary 10100, however this doesn't work for all the parts.



But the biggest red herring:




Everything in the telegram but the morse code is unneeded!



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