Science Olympiad

Scrambler

Scrambler

Codebusters

These were made with AI (mostly Gemini 3 Pro). Hopefully they are correct.

My notes

I've gone through some of the tests and attemped making notes to explain how I understand how these ciphers work.
See my cipher notes.

Aristocrats

Aristocrats
Aristocrats example
Aristocrats example 2

Affine Cipher

Affine Cipher
Affine Cipher example

Atbash Cipher

Atbash Cipher

Baconian Cipher

Baconian Cipher
Baconian Cipher with symbols

Caesar

Caesar Cipher

Checkerboard Cipher

Checkerboard Cipher

Cryptarithms

Cryptarithms

Fractionated Morse Cipher

Fractionated Morse Cipher

Nihilist Cipher

Nihilist Cipher
Nihilist Cipher example

Porta Cipher

Porta Cipher
Porta Cipher example

Xenocrypt

Xenocrypt

Samples

Sample tests: Click on one of the Division B tests from last year. On each page, click on the Test Packet to see the actual test and the Resource Sheet to see what will be given to you for the exam. There is also an answer key.

Also look at the 'Test Generation Tools' menu at the top of the page. You can use the cipher pages to generate your own questions or to help solve.

Boomilever