| Date | User | Challenge | Score |
| 1101001 | Hex | 5 | |
| gaiseric | XOR Starter | 10 | |
| Kalig | Transparency | 50 | |
| Amr_Mohsen | Extended GCD | 20 | |
| Null_Warlock | Bytes and Big Integers | 10 | |
| anass_abouzi | LWE High Bits Message | 15 | |
| brunolim4 | Oh SNAP | 120 | |
| caprisun | XOR Properties | 15 | |
| Abhinav7686 | Hex | 5 | |
| Abhinav7686 | ASCII | 5 | |
| Gengg_ | Structure of AES | 15 | |
| Abhinav7686 | Great Snakes | 3 | |
| Benshcha | You either know, XOR you don't | 30 | |
| jackoha | SIDH Key Exchange | 80 | |
| Abhinav7686 | Finding Flags | 2 | |
| Kalig | SSH Keys | 35 | |
| Benshcha | Favourite byte | 20 | |
| Kalig | CERTainly not | 30 | |
| erhant | Proofs of Knowledge | 20 | |
| Benshcha | XOR Properties | 15 | |
| Amr_Mohsen | Greatest Common Divisor | 15 | |
| gn0m3 | Chinese Remainder Theorem | 40 | |
| 1101001 | ASCII | 5 | |
| TheMalevolentOne | You either know, XOR you don't | 30 | |
| 1101001 | Great Snakes | 3 | |
| Benshcha | XOR Starter | 10 | |
| baoan | Find the Lattice | 100 | |
| Benshcha | Bytes and Big Integers | 10 | |
| Kalig | Privacy-Enhanced Mail? | 25 | |
| 1101001 | Finding Flags | 2 | |
| Benshcha | Base64 | 10 | |
| baoan | Gaussian Reduction | 50 | |
| Benshcha | Hex | 5 | |
| Benshcha | ASCII | 5 | |
| greddy | XOR Starter | 10 | |
| Benshcha | Great Snakes | 3 | |
| Benshcha | Finding Flags | 2 | |
| Horus666 | Network Attacks | 5 | |
| Novy | Public Keys | 15 | |
| TheMalevolentOne | Favourite byte | 20 | |
| Novy | Modular Exponentiation | 10 | |
| greddy | Bytes and Big Integers | 10 | |
| ako8 | ASCII | 5 | |
| caprisun | XOR Starter | 10 | |
| greddy | Base64 | 10 | |
| greddy | Hex | 5 | |
| nahejbrave | Quadratic Residues | 25 | |
| Shrine | Public Keys | 15 | |
| Shrine | Modular Exponentiation | 10 | |
| Crislyn | Symmetry | 50 |
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