# Find the ciphering method 4

The message:

A U J A H M N Q G B U B A W Q W Q M Q R
N W N G Q G P U M S T Z A N G U O W R M
R L H M O W O P W N X Z R U O T X U X I
N K N W M N B A B H E O W P M M O H T G
P Y A G G Y H S Y K N G Q U Y A Z J P G
Y W M N Y R E Y K K U W Z W B E Y S J B
R R C Y R Z H O Y M P C O X T M X V U P
Y W M O Z K E S P B Q W Q E S Y T N M B
R W Z N P R U B J E M G O Q F A B U A O
W R A H B K T O Z B S Q K M U H A J E N
K Q R N R Z R A O J O T F J K Z Q N S A
O W K Q P A M M F A P A F B W R G F J F
M D M R Z M G L U X B E X M V Z T W I U
Y S A M G Q N Z K H U U U Y F R Y Z P W
E R D B S R O F A A F X B B O X I U X J
E U G J T W T H N Y E Z S Z Y Y Z Q E Z
M L Q X R N T I W S E R B G V R M G N Q
N N W F B U M Q T T H N O R N W H U J J
U A S G E E M E K O Z S P T M T O A B S
N A Q B N K Y P B T G H W U M W O N M N


The answer:

FLUTE

Hint 1:

Look at row composition

Hint 2:

Some rows have letters that others do not have.

Hint 3:

X marks the spot row. And not only X.

• Given how quickly you are coming up with them, it might be better if you were to ask all questions in a single interconnected puzzle. Just saying though. Aug 26, 2023 at 20:17
• @newQOpenWid - thank you, I will consider doing it in the future. However, I will leave the first 4 as they are because deleting and republishing them would be unfair to those who have already started solving one of them and doesn't want to solve others. Aug 28, 2023 at 10:23
• People post partial answers where they only solve one puzzle, btw. Aug 29, 2023 at 19:08
• All rows have letters that others do not have. There is no letter that appears in every row. The least frequent letters ILVDC are all associated with Roman numerals. Mar 20 at 3:52
• @codewarrior0 - yes, the puzzle employs all Roman numerals except M. Mar 20 at 11:18

## 1 Answer

The encryption method was to:

1. Start with the input
2. Apply a ROT3 Encryption
3. Convert the characters to A1Z26
4. Square the A1Z26
5. Convert the A1Z26 to roman numerals
6. Embed the roman numerals in the crossword

Table of steps:

ROMAN ARABIC SQRT A1Z26 ROT3
LXXXI 81 9 I F
CCXXV 225 15 O L
DLXXVI 576 24 X U
DXXIX 529 23 W T
LXIV 64 8 H E

Image with highlighted characters:

• That seems to be a correct answer. One difference with my method is I used Ceasar cipher with the shift of 3 instead of ROT4, but apparently they are identical? Also, may I ask what software you used to highlight the letters? Mar 20 at 11:29
• @webadventurer Right, I had used A0Z25. Updated. I highlighted the characters with Excel. Mar 20 at 12:23