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2. Pigpen cipher - Wikipedia

   en.wikipedia.org/wiki/Pigpen_cipher

   The pigpen cipher (alternatively referred to as the masonic cipher, Freemason's cipher, Rosicrucian cipher, Napoleon cipher, and tic-tac-toe cipher) [2] [3] is a geometric simple substitution cipher, which exchanges letters for symbols which are fragments of a grid. The example key shows one way the letters can be assigned to the grid.

3. Kryptos - Wikipedia

   en.wikipedia.org/wiki/Kryptos

   1990. Dimensions. 11–12 feet × 20 feet. Location. George Bush Center for Intelligence, Langley, Virginia. Coordinates. 38°57′08″N 77°08′45″W. /  38.95227°N 77.14573°W  / 38.95227; -77.14573. Kryptos is a distributed sculpture by the American artist Jim Sanborn located on the grounds of the Central Intelligence Agency (CIA ...

4. Caesar cipher - Wikipedia

   en.wikipedia.org/wiki/Caesar_cipher

   Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...

5. The Secrets of Triangles - Wikipedia

   en.wikipedia.org/wiki/The_Secrets_of_Triangles

   The Secrets of Triangles. Appearance. hide. First edition. The Secrets of Triangles: A Mathematical Journey is a popular mathematics book on the geometry of triangles. It was written by Alfred S. Posamentier and Ingmar Lehmann [ de], and published in 2012 by Prometheus Books .

6. Chants of Sennaar - Wikipedia

   en.wikipedia.org/wiki/Chants_of_Sennaar

   Release. WW: 5 September 2023. Genre (s) Adventure. Mode (s) Single-player. Chants of Sennaar is a 2023 adventure video game developed by Rundisc and published by Focus Entertainment. It was released for the Nintendo Switch, PlayStation 4, Windows, and Xbox One on 5 September 2023. The game is inspired by Heaven's Vault and Captain Blood.

7. Patricia Davies (codebreaker) - Wikipedia

   en.wikipedia.org/wiki/Patricia_Davies_(codebreaker)

   Patricia Davies (née Owtram; born 19 June 1923) is an English former codebreaker who served as a special duties linguist in the Women’s Royal Naval Service during World War II. She and her younger sister Jean Argles are often referred to as "The Codebreaking Sisters". [1] As a teenage interceptor, Davies listened to radio transmissions in ...

8. Philippines - Wikipedia

   en.wikipedia.org/wiki/Philippines

   in ASEAN (dark grey) – [Legend] Capital Manila (de jure) Metro Manila [a] (de facto) Largest city Quezon City Official languages Filipino English Recognized regional languages 19 languages National sign language Filipino Sign Language Other recognized languages [b] Spanish and Arabic Ethnic groups (2020) 26.0% Tagalog 14.3% Bisaya 8.0% Ilocano 8.0% Cebuano 7.9% Ilonggo 6.5% Bicolano 20.3% ...

9. Cryptanalysis of the Enigma - Wikipedia

   en.wikipedia.org/wiki/Cryptanalysis_of_the_Enigma

   The Enigma machine was used commercially from the early 1920s and was adopted by the militaries and governments of various countries—most famously, Nazi Germany. Cryptanalysis of the Enigma ciphering system enabled the western Allies in World War II to read substantial amounts of Morse-coded radio communications of the Axis powers that had ...