| Date | User | Challenge | Score |
| d4rlene | Base64 | 10 | |
| BENLOLO | ASCII | 5 | |
| B00177175_Andre | Marin's Secrets | 50 | |
| minyawy | Manyprime | 40 | |
| sim | The j-invariant | 20 | |
| BENLOLO | Great Snakes | 3 | |
| Dandyboi | Modular Square Root | 35 | |
| athinasiakantari | Factoring | 15 | |
| sim | Introduction to Isogenies | 10 | |
| ordavidro | Quadratic Residues | 25 | |
| d4rlene | Hex | 5 | |
| koggy | ECB CBC WTF | 55 | |
| d4rlene | ASCII | 5 | |
| minyawy | Square Eyes | 35 | |
| d4rlene | Great Snakes | 3 | |
| vadim | What's a Lattice? | 40 | |
| stefana_giosu | Modular Inverting | 25 | |
| cwoolfries | XOR Starter | 10 | |
| stornito | Modular Binomials | 80 | |
| d4rlene | Finding Flags | 2 | |
| vadim | Gram Schmidt | 30 | |
| hmsh | Modular Inverting | 25 | |
| renkon | Base64 | 10 | |
| Serge_Salcedo | Resisting Bruteforce | 10 | |
| renkon | Hex | 5 | |
| renkon | ASCII | 5 | |
| B00177175_Andre | Infinite Descent | 50 | |
| Serge_Salcedo | Keyed Permutations | 5 | |
| B00177250 | Deriving Symmetric Keys | 40 | |
| Hib00boo | Diffusion through Permutation | 30 | |
| hmsh | Modular Arithmetic 2 | 20 | |
| Serge_Salcedo | Jack's Birthday Hash | 20 | |
| neoseiki | Modular Arithmetic 2 | 20 | |
| athinasiakantari | RSA Decryption | 20 | |
| minyawy | Monoprime | 30 | |
| neoseiki | Modular Arithmetic 1 | 20 | |
| gr4b0wski | Unencryptable | 125 | |
| B00177250 | Computing Shared Secrets | 30 | |
| minyawy | Inferius Prime | 30 | |
| stefana_giosu | Modular Arithmetic 2 | 20 | |
| hmsh | Modular Arithmetic 1 | 20 | |
| BENLOLO | Finding Flags | 2 | |
| neoseiki | Extended GCD | 20 | |
| dan_martins | RSA Signatures | 25 | |
| stefana_giosu | Modular Arithmetic 1 | 20 | |
| minyawy | Factoring | 15 | |
| hmsh | Extended GCD | 20 | |
| vadim | Size and Basis | 15 | |
| stefana_giosu | You either know, XOR you don't | 30 | |
| vadim | Vectors | 10 |
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