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Will you be able to crack the code of the missing secret key? - Find out more on: https://www.101computing.net/secret-key/
September 1, 2025 at 5:03 PM
Reposted by 101Computing.net
@101computing.bsky.social is consistently a source of great ideas, resources and activities.

If you've not followed them or visited the site then you really, really should.

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Apply the Luhn Algorithm to decide if a credit card number is valid or not. Write a Python script to validate any credit card number using this algorithm. - Find out more on: https://www.101computing.net/is-my-credit-card-valid/
August 31, 2025 at 2:34 PM
Apply the Luhn Algorithm to decide if a credit card number is valid or not. Write a Python script to validate any credit card number using this algorithm. - Find out more on: https://www.101computing.net/is-my-credit-card-valid/
August 31, 2025 at 9:40 AM
Encode and decode secret messages hidden using a visual cryptography technique. - Find out more on: https://www.101computing.net/visual-cryptography
August 30, 2025 at 8:31 AM
Santa Claus has sent you a few encoded messages. Will you be able to decode these? - Find out more on: https://www.101computing.net/secret-santa-ciphers/
August 29, 2025 at 7:12 AM
Use your coding and cryptography skills to decode encrypted messages using the Atbash Cipher encryption technique. - Find out more on: https://www.101computing.net/atbash-cipher-algorithm/
August 28, 2025 at 4:26 PM
Become a code breaker: Use on online Frequency Analysis tool to decode a range of encrypted secret messages. - Find out more on: https://www.101computing.net/frequency-analysis/
August 27, 2025 at 6:33 AM
Use a Caesar Cipher wheel and a frequency analysis to decode secret messages encoded using a Caesar Cipher. Write your own Python script to crack the Caesar Cipher encryption technique! - Find out more on: https://www.101computing.net/caesar-shift-decoder/
August 26, 2025 at 3:25 PM
Join Alan Turing's team of code breakers to break the engima code and decode some secret messages from World War II. - Find out more on: https://www.101computing.net/enigma-mission-x-challenge/
August 23, 2025 at 8:31 AM
Use your SQL coding skills to identify the 12 thiefs of the 12 world most prestigious gemstones. - Find out more on: https://www.101computing.net/sql-investigation-the-stolen-gemstones/
August 22, 2025 at 7:12 AM
The gallery manager of the Tate Modern needs your coding skills to help him access to the world's 12 most famous paintings before the gran opening of the Expo Art exhibition. - Find out more on: https://www.101computing.net/art-expo-code-breaking-challenge/
August 21, 2025 at 4:26 PM
Solve these 12 coding puzzles to locate the 12 hidden treasures of captain Blackbeard. - Find out more on: https://www.101computing.net/blackbeards-hidden-treasures/
August 20, 2025 at 6:33 AM
Solve these 12 coding puzzles to locate the 12 missing pieces of the lost Roman sundial. - Find out more on: https://www.101computing.net/the-lost-roman-sundial/
August 19, 2025 at 3:25 PM
Welcome to Hogwarts school of witchcraft and wizardry! For this set of challenges you will be helping the famous wizard Harry Potter to recover all of his magical possessions. - Find out more on: https://www.101computing.net/the-marauders-map-coding-challenges/
August 18, 2025 at 5:03 PM
Solve these 12 coding puzzles to locate the 12 missing pieces of Pachcuti's golden shield. - Find out more on: https://www.101computing.net/the-legend-of-pachacutis-golden-shield/
August 17, 2025 at 9:40 AM
Solve these 12 coding puzzles to locate the 12 missing pieces of Tutankhamun\' lost Papyrus. - Find out more on: https://www.101computing.net/tutankhamun-papyrus/
August 16, 2025 at 8:31 AM
A team of archaeologists needs your help to unlock the 12 compartments and reveal the location of Ragnar Lothbrok’s treasure!​ - Find out more on: https://www.101computing.net/the-jorvik-viking-settlement/
August 15, 2025 at 7:12 AM
Use your code breaking skills to hack the access codes required to unock these 3 sets of 12 digicodes. - Find out more on: https://www.101computing.net/code-breaker-challenges/
August 14, 2025 at 4:26 PM
Code your way through the galaxy! Will you be able to control your spaceship to navigate through the galaxy without hitting an asteroid? - Find out more on: https://www.101computing.net/space-explorer-the-way-back-home/
August 13, 2025 at 6:33 AM
Be the captain of your own pirate ship and sail the seven seas to find the 32 lost treasures of pirate island. - Find out more on: https://www.101computing.net/the-lost-treasures-of-pirate-island/
August 12, 2025 at 3:25 PM
The MI6 main server has been hacked. We need your help to unlock the secret agents's phones and secure the MI6 network from future attacks. - Find out more on: https://www.101computing.net/mi6-mission-alpha/
August 11, 2025 at 5:03 PM
Have you ever seen a lightning flash or heard the thunder of lightning and wondered how close you were from the ligthning strike? Find our more by completing this Python challenge. - Find out more on: https://www.101computing.net/lightning-distance-calculator/
August 10, 2025 at 9:40 AM
Use your Python skills to apply Archimedes\' principle and identify the metal of a crown based on its density. - Find out more on: https://www.101computing.net/eureka-and-king-hieros-crown/
August 7, 2025 at 4:26 PM
Use your Python skills to create randomised weather forecast reports for any place in the world. - Find out more on: https://www.101computing.net/weather-forecast-report/
August 6, 2025 at 6:33 AM
Use your Python skills to a help a daily commuter answer their question: "In how many years will I have travelled the equivalent distance of going to the Moon and back due to my daily commute?" - Find out more on: https://www.101computing.net/to-the-moon-and-back/
August 5, 2025 at 3:25 PM