A1Z26 Reference
A simple substitution where A=1, B=2, continuing through Z=26. Common in geocache puzzle coordinates and clue strings.
A1
B2
C3
D4
E5
F6
G7
H8
I9
J10
K11
L12
M13
N14
O15
P16
Q17
R18
S19
T20
U21
V22
W23
X24
Y25
Z26
Example: CACHE = 3-1-3-8-5