GCHQ Christmas Puzzle 2025
How to solve the BACK of all
3 Christmas Cards
Can you find it? SPECIAL
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RIVERS
Ignore the rivers.… Amazon, Nile, Ganges, Seine & Danube
The remaining letters are.... SEMAHT
SEMAHT backwards is THAMES
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ROBBER
Answer: IN BAD FAITH
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GIFTS FROM SANTA
Take 1 Letter per Box
?LIPPERS no S
C?MPUTER no O
NE?KLAE no C
COO?BOOK no K
HAND?OAP no S
Answer: SOCKS
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TWO UV PAIRS
V = 1
A = 2
R = 3
I = 4
O = 5
U = 6
S = 7
T = 8
P = 9
W = 0
U(6)V(1) + U(6)V(1) + V(1) = 123 (VAR)
R(3) x P(9) x P(9) = 243 (AIR)
SO(75) + SO(75) = 150 (VOW)
Answer: VARIOUS
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SOLVE THIS CODE
click on the question for a larger image
P I G M I H M D R P M H S I A M A
S O M E O N E H A S E N C O D E D
P=S, I=O, G=M, M=E, I=O, H=N, M=E, D=H, R=A, P=S
M=E, H=N, S=C, I=O, A=D, M=E, A=D
Q D M P M M B N D Q U I T L F M Q Q M L
T H E S E E I G H T F O U R L E T T E R
Q=T, D=H, M=E, P=S, M=E, M=E, B=I, N=G, D=H, Q=T
U=F, I=O, T=U, L=R, F=L, M=E, Q=T, Q=T, M=E, L=R
N B L F P H R G M P
G I R L S N A M E S
N=G, B=I, L=R, F=L, P=S, H=N, R=A, G=M, M=E, P=S
Decode the following using the code above
LTOY = RUBY
ILFR = ORLA
PRLR = SARA
ROOY = ABBY
GRYR = MAYA
TPDR = USHA
HIIL = NOOR
ARHB = DANI
Decode the message using the same code.
PDM FMUQ R SFTM QI DML IWH
HRGN OTQ SHR YIT WILE BQ ITQ?
SHE LEFT A CLUE TO HER OWN NAME BUT CAN YOU WORK IT OUT?
RUBY, ORLA, SARA, ABBY, MAYA, USHA, NOOR, DANI
Answer: ROSAMUND
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FIND THE 7 LETTER WORD
Denmark
Germany
Estonia
Hungary
Croatia
Answer: COUNTRY
This answer works, but I'm sure it is not correct.
There are too many extra letters remaining.
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SEVEN QUESTION ANSWERED
6. ROSAMUND
2. THAMES
7. COUNTRY
5. VARIOUS
3. IN BAD FAITH
1. SPECIAL
4. SOCKS
ROSAMUND THAMES COUNTRY VARIOUS IN BAD FAITH SPECIAL SOCKS
Using the letters going around the outside of
the Christmas Card
Y C D
E H K
O N L
R T U
Remove any letter not shown above from the letters below, the letters to remove are in brackets.
RO(SAM)UND
TH(AM)E(S)
COUNTRY
(VA)R(I)OU(S
I)N
(BA)D
(FAI)TH
(SP)EC(IA)L
(S)OCK(S)
FINAL ANSWER
A description of GCHQ's work
ROUND THE COUNTRY ROUND THE CLOCK
GCHQ Christmas Puzzle 2025
How to solve the FRONT clues for
GCHQ Christmas Card 3
1=A, 2=B, 3=C, 4=D, 5=E, 6=F, 7=G, 8=H, 9=I, 10=J, 11=K, 12=L,
13=M
15=O, 16=P, 17=Q, 18=R, 19=S, 20=T, 21=U, 22=V, 23=W,
24=X
THE FIRST FOURTH SEVENTH AND LAST LETTERS ARE THE SAME
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BUNTING PUZZLE
G IS EIGHTH & FIFTEENTH
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PINK CODE
SHIFT +13
WKH WKLUG OHWWHU LV D
THE THIRD LETTER IS
A
WKH VLAWK DOG IRXUWHHQWK OHWWHUV DUH Q
THE SIXTH AND FOURTEENTH LETTERS ARE N
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MORSE CODE
Morse Code Decoder
T and I are the 12 and 13 Letters
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PIGPEN CODE
https://en.wikipedia.org/wiki/Pigpen_cipher
THE NINTH LETTER IS R
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Dear Santa
Blfi kzhhdliw rh 16 ovggvih olmt.
Your password is 16 letters long
Gsv hvxlmw, gvmgs zmw vovevmgs ovggvih ziv gsv urugs
The second, tenth and eleventh letters are the fifth
ovggvi lu gsv zokszyvg. Blfi urihg ovggvi rh h.
letter of the alphabet. Your first letter is S
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REVERSED LETTER
Read the letters from Right to Left
THE FIFTH LETTER IS O
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THE TOP SECRET PASSWORD IS SIXTEEN LETTERS LONG
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
S E
A S
O N
S G
R E
E T
I N
G S
SEASONS GREETINGS
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On the paper note against the computer screen
2 = H
A=1, B=2, C=3, D=4, E=5, F=6, G=7, H=8, I=9, J=10, K=11, L=12
M=13, N=14, O=15, P=16, Q=17, R=18, S=19, T=20, U=21, V=22
W=23, X=24, Y=25, Z=26
H is the 8th letter of the alphabet, however we are now told
2 = H, H is the 8th letter. We need to plus 6 places to reach the correct letters.
SHIFT +6
7 + 6 = 13, 13th letter is M
25 + 6 steps = 26, 1, 2, 3, 4, 5 5th letter is E
12 + 6 = 18th letter is R
12 + 6 = 18th letter is R
19 + 6 = 25th letter is Y
7.25.12.12.19
GYLLS
13.5.18.18.25
MERRY
23.2.12.3.13.14.7.21.13
WBLCMNGUM
3.8.18.9.19.20.13.1.19
CHRISTMAS
Answer: MERRY CHRISTMAS
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Morse Code
Going around the Christmas Card
Top line of Morse Code READ from RIGHT to LEFT
-- M, . E, .-. R, .-. R, -.-- Y
RIGHT side of Card READ Morse Code from BOTTOM to TOP
Now shown as RIGHT to LEFT
-.-. C, .... H, .-. R, .. I, ... S, - T, -- M, .- A, ... S
The bottom Morse code is repeated from LEFT to RIGHT - MERRY
The LEFT Morse Code is repeated from TOP to BOTTOM - CHRISTMAS
MERRY CHRISTMAS
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GCHQ Christmas Puzzle 2025
GCHQ Christmas Card 3
Click on picture below for a larger image
Click on puzzle below for a larger image
Click on Christmas Card for a larger Image
Click here to download all 3 puzzles
You have 3 Christmas Cards to Solve
Answers to the hardest Christmas Card
Puzzle No. 3 to the right.
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GCHQ Christmas Card 2
Click on Christmas Card for a larger Image
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GCHQ Christmas Card 1
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