Easy Number Substitution Cryptograms
Letter Substitution Cryptograms that May Challenge You
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Tricky Number Substitution Cryptograms

These number substitution cryptograms come from a variety of sources, from ancient times to the modern day. Use your letter frequency skills to crack them!

You can find more tips on how to crack cryptograms on the Cracking Codes & Cryptograms For Dummies Cheat Sheet.

Tricky Number Cipher 1. The numbers in this cipher have been randomly assigned as any two digit number between 01 and 99.

90.56.76.42 15.73 69.90.56.63.63 80.63.56.15.69 62.73.95 65.61.42.53 61.56.06.42 15.73.65 65.61.42 80.73.71.42.95 65.73 69.65.44.95 90.42.15’69 07.63.73.73.46.

15.44.74.74.73.63.73 90.56.74.61.44.56.06.42.63.63.44

Tricky Number Cipher 1 Hint

Tricky Number Cipher 1 Answer

Tricky Number Cipher 2. To crack this puzzle, remember that Roman numerals are represented as letters.

06.03 07.13.14.12 12.05.03 08.15.03.02.20.04.08.10 04.13.07.13.10.20.03.14 16.03.04.08.26.14.03 06.03 07.08.04.09.03.01 12.05.03 14.12.08.12.03.14.15.08.10.14.05.20.11 12.13 09.10.13.06 12.05.03 02.20.22.05.12 12.20.15.03 08.10.01 12.05.03 15.08.10.10.03.02 13.25 24.20.03.07.01.20.10.22 06.05.08.12 20.14 20.15.11.13.14.14.20.16.07.03 12.13 09.03.03.11. 21.26.03.03.10 03.07.20.23.08.16.03.12.05 20.20

Tricky Number Cipher 2 Hint

Tricky Number Cipher 2 Answer

Tricky Number Cipher 3. Two men prepare to exchange the password of the first degree of initiation into the Knights of the Golden Circle, Confederate sympathizers:

99.62.00 66.14.23.23 41.78.35 73.59.94 78.73.02.41.90.39.94.02, “59.62.66 41.98 14 73.62 35.90.62.66 99.62.00 73.62 52.94 41 35.90.14.39.59.73 62.93 73.59.94 39.62.23.20.94.90 69.14.02.69.23.94?” 59.94 66.14.23.23 02.94.06.23.99, “52.99 98.99 06.41.78.78.66.62.02.20.” 99.62.00 66.14.23.23 73.59.94.90 78.41.99, “66.14.23.23 99.62.00 39.14.34.94 14.73 73.62 98.94?” 59.94 66.14.23.23 78.41.99, “14 20.14.20 90.62.73 78.62 02.94.69.94.14.34.94 14.73; 52.00.73 14 66.14.23.23 23.94.73.73.94.02 14.73 66.14.73.59 99.62.00.”

Tricky Number Cipher 3 Hint

Tricky Number Cipher 3 Answer

Tricky Number Cipher 4. Decrypt this cipher to find out if Freemasonry is a secret society:

XXV-XXIII-IV XI-IV-XI-XX-IV-XXVI-VII VI-XIII IX XXV-XXVI-XIV-XIX-XV
VII-IV-XVI-XXVI-IV-XXV VII-VI-XVI-II-IV-XXV-XV XVIII-IV-X-XV XXV-XXIII-IX-XXV XXV-XXIII-IV
VII-VI-XVI-II-IV-XXV-XV IV-XVII-II-VII-XXV-VII IX-XXV IX-XIX-XIX,
VI-XXVI IX-XXV XIX-IV-IX-VII-XXV XVIII-IV-X-XV XXV-XXIII-IX-XXV
XXV-XXIII-IV-XV'XXVI-IV XI-IV-XI-XX-IV-XXVI-VII.
XIII-XXVI-IV-IV-XI-IX-VII-VI-X-VII XVIII-VI X-IV-II-XXV-XXIII-IV-XXVI.

Tricky Number Cipher 4 Hint

Tricky Number Cipher 4 Answer

Tricky Number Cipher 5. Chia Lin, an ancient commentator on Sun Tzu’s The Art of War, said:

12.11 12.02.15.26 22.20.01.06.18.03.01 25.21.20.10.25 20.25 13.20.04.10 12 15.12.11 22.20.01.06.18.03.01 10.12.02.25 18.02 10.26.10.25.

Tricky Number Cipher 5 Hint

Tricky Number Cipher 5 Answer

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