On the Subject of Minimizing Morsematics

Get it? Because it's a cheatsheet! I'll see myself out...

Take the 4th and 5th character of the serial number. They will be refered to as A and B respectively.

Always keep all numeric values between 1-26.

Perform each step below in sequence, modifying A and B:
  • For every ind. that matches a received letter, +1 to A if it's lit or otherwise +1 to B.
  • If A + B is square, +4 to A; otherwise, -4 to B.
  • +Largest received letter to A.
  • -Any prime received letters to A.
  • -Any square received letters to B.
  • For any received letters that are / # Bat., - from both A and B.
After performing all steps, perform whatever rule applies below:
  • A = B: Transmit A.
  • A > B: Transmit A - B.
  • A < B: Transmit A + B.
Perfect squares. Prime numbers.
Letter # -# Morse Letter # -# Morse
A 1 -25 .- N 14 -12 -.
B 2 -24 -... O 15 -11 ---
C 3 -23 -.-. P 16 -10 .--.
D 4 -22 -.. Q 17 -9 --.-
E 5 -21 . R 18 -8 .-.
F 6 -20 ..-. S 19 -7 ...
G 7 -19 --. T 20 -6 -
H 8 -18 .... U 21 -5 ..-
I 9 -17 .. V 22 -4 ...-
J 10 -16 .--- W 23 -3 .--
K 11 -15 -.- X 24 -2 -..-
L 12 -14 .-.. Y 25 -1 -.--
M 13 -13 -- Z 26 0 --..