Posted by The Alan Turing Cryptography Competition is aimed at secondary school children in the UK to encourage them to solve problems and puzzles.
The 2021 competition concluded in March but the questions and the solutions can be explored by the public without registration.
MathsBombe is the sister competition to the Alan Turing Cryptography Competition. Aimed at A-level students and those taking GCSE, the competition features a series of mathematical puzzles to solve.
MathsBombe and Alan Turing Cryptography Competition are organised by the Department of Mathematics at The University of Manchester.