| Date | User | Challenge | Score |
| sydneyaisha | XOR Properties | 15 | |
| Seperi | Point Negation | 10 | |
| sydneyaisha | XOR Starter | 10 | |
| 4den | Finding Flags | 2 | |
| sydneyaisha | Encoding Challenge | 40 | |
| Seperi | Background Reading | 5 | |
| sydneyaisha | Bytes and Big Integers | 10 | |
| as1760 | Base64 | 10 | |
| amani_koros | Diffusion through Permutation | 30 | |
| sydneyaisha | Base64 | 10 | |
| sydneyaisha | Hex | 5 | |
| sydneyaisha | ASCII | 5 | |
| Seperi | Export-grade | 100 | |
| aryma | Extended GCD | 20 | |
| sydneyaisha | Network Attacks | 5 | |
| Seperi | Parameter Injection | 60 | |
| sydneyaisha | Great Snakes | 3 | |
| sydneyaisha | Finding Flags | 2 | |
| chenhongyi | Hex | 5 | |
| Seperi | Deriving Symmetric Keys | 40 | |
| as1760 | Hex | 5 | |
| Seperi | Computing Shared Secrets | 30 | |
| Seperi | Computing Public Values | 25 | |
| maquuu1809 | Modular Square Root | 35 | |
| Seperi | Generators of Groups | 20 | |
| aryma | Greatest Common Divisor | 15 | |
| Apariel | Finding Flags | 2 | |
| Seperi | Working with Fields | 10 | |
| Seperi | Modulus Inutilis | 50 | |
| amani_koros | Confusion through Substitution | 25 | |
| Seperi | Salty | 20 | |
| WMars | Great Snakes | 3 | |
| Seperi | Manyprime | 40 | |
| 4ydik | Favourite byte | 20 | |
| Seperi | Monoprime | 30 | |
| Dhruvshukla | Square Eyes | 35 | |
| Seperi | Factoring | 15 | |
| aryma | Lemur XOR | 40 | |
| Seperi | RSA Signatures | 25 | |
| WMars | Finding Flags | 2 | |
| NischayKhetan | Structure of AES | 15 | |
| Seperi | RSA Decryption | 20 | |
| Seperi | Private Keys | 20 | |
| Seperi | Euler's Totient | 20 | |
| Seperi | Public Keys | 15 | |
| 4ydik | XOR Properties | 15 | |
| chenhongyi | ASCII | 5 | |
| Seperi | Modular Exponentiation | 10 | |
| mathical0732 | Lo-Hi Card Game | 120 | |
| FortySixnTwo | Favourite byte | 20 |
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