| Date | User | Challenge | Score |
| omnientropy | Finding Flags | 2 | |
| valterx23 | Great Snakes | 3 | |
| cer00ja | Passwords as Keys | 50 | |
| wiseis | XOR Starter | 10 | |
| valterx23 | Finding Flags | 2 | |
| cer00ja | Modes of Operation Starter | 15 | |
| cer00ja | Bringing It All Together | 50 | |
| v1ct1g3r | Round Keys | 20 | |
| GaGaSolve | Resisting Bruteforce | 10 | |
| cer00ja | Diffusion through Permutation | 30 | |
| cer00ja | Confusion through Substitution | 25 | |
| GaGaSolve | Keyed Permutations | 5 | |
| cer00ja | Round Keys | 20 | |
| cer00ja | Structure of AES | 15 | |
| cer00ja | Resisting Bruteforce | 10 | |
| cer00ja | Keyed Permutations | 5 | |
| reyes355 | Passwords as Keys | 50 | |
| cer00ja | Modular Binomials | 80 | |
| cer00ja | Adrien's Signs | 80 | |
| didididi | Great Snakes | 3 | |
| barrapuda | Modular Binomials | 80 | |
| cer00ja | Chinese Remainder Theorem | 40 | |
| cer00ja | Modular Square Root | 35 | |
| HectorTheGreat | Great Snakes | 3 | |
| HectorTheGreat | Finding Flags | 2 | |
| cer00ja | Legendre Symbol | 35 | |
| cer00ja | Quadratic Residues | 25 | |
| cer00ja | Modular Inverting | 25 | |
| cer00ja | Modular Arithmetic 2 | 20 | |
| cer00ja | Modular Arithmetic 1 | 20 | |
| cer00ja | Extended GCD | 20 | |
| cer00ja | Greatest Common Divisor | 15 | |
| cer00ja | You either know, XOR you don't | 30 | |
| cer00ja | Favourite byte | 20 | |
| cer00ja | XOR Properties | 15 | |
| cer00ja | XOR Starter | 10 | |
| cer00ja | Bytes and Big Integers | 10 | |
| cer00ja | Base64 | 10 | |
| NoBirdWasHam | Double and Broken | 50 | |
| cer00ja | Hex | 5 | |
| cer00ja | ASCII | 5 | |
| cer00ja | Great Snakes | 3 | |
| cer00ja | Finding Flags | 2 | |
| reyes355 | Modes of Operation Starter | 15 | |
| Aldhairhr | Privacy-Enhanced Mail? | 25 | |
| yeetoh | You either know, XOR you don't | 30 | |
| yeetoh | Favourite byte | 20 | |
| NoBirdWasHam | Collider | 50 | |
| rfmph | ProSign 3 | 100 | |
| 0xs1nr | Everything is Big | 70 |
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