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Resources tagged with Codes and cryptography similar to W Mates:

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Challenge level: Challenge Level:1 Challenge Level:2 Challenge Level:3

There are 19 results

Broad Topics > Applications > Codes and cryptography

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Vital?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Third challenge cipher

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Up a Semitone?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Fifth challenge cipher

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Jluuis or Even Asutguus?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Sixth challenge cipher

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Ip?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Seventh challenge cipher

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A Fine Thing?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Second challenge cipher

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Semicircle

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Fourth challenge cipher

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Stage 5 Cipher Challenge

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?

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Transposition Cipher

Stage: 3 and 4 Challenge Level: Challenge Level:1

Can you work out what size grid you need to read our secret message?

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Substitution Transposed

Stage: 3 and 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Substitution and Transposition all in one! How fiendish can these codes get?

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Keeping it Safe and Quiet

Stage: 2, 3, 4 and 5

Simon Singh describes PKC, its origins, and why the science of code making and breaking is such a secret occupation.

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Secret Transmissions

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

How can Agent X transmit data on a faulty line and be sure that her message will get through?

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More Secret Transmissions

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

In 'Secret Transmissions', Agent X could send four-digit codes error free. Can you devise an error-correcting system for codes with more than four digits?

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Substitution Cipher

Stage: 3 and 4 Challenge Level: Challenge Level:1

Find the frequency distribution for ordinary English, and use it to help you crack the code.

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The Best Card Trick?

Stage: 3 and 4 Challenge Level: Challenge Level:1

Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?

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Cipher Challenge Toolkit

Stage: 3, 4 and 5 Challenge Level: Challenge Level:1

Our toolkit removes the drudgery of codebreaking while leaving you to do the hard thinking!

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Probably a Code?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Is the regularity shown in this encoded message noise or structure?

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Secondary Cipher Challenge Part 1

Stage: 3 and 4 Challenge Level: Challenge Level:2 Challenge Level:2

Here is the start of a six-part challenge. Can you get to the end and crack the final message?

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A Roman Conversion?

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

First cipher

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James's Code Challenge

Stage: 2, 3, 4 and 5 Challenge Level: Challenge Level:1

The Enigma Project's James Grime has created a video code challenge. Watch it here!