| Date | User | Challenge | Score |
| geuple | XOR Properties | 15 | |
| abcdefghijklmno | Modular Arithmetic 1 | 20 | |
| nissapra | XOR Starter | 10 | |
| Dcaha001 | XOR Starter | 10 | |
| kaifbhagat | Hex | 5 | |
| kaifbhagat | ASCII | 5 | |
| Zirey | ASCII | 5 | |
| nissapra | Bytes and Big Integers | 10 | |
| kaifbhagat | Network Attacks | 5 | |
| geuple | XOR Starter | 10 | |
| dapa_ayayyy | Public Keys | 15 | |
| kaifbhagat | Great Snakes | 3 | |
| Magixx | Modular Arithmetic 1 | 20 | |
| kaifbhagat | Finding Flags | 2 | |
| geuple | Bytes and Big Integers | 10 | |
| Dcaha001 | Bytes and Big Integers | 10 | |
| krypts | XOR Starter | 10 | |
| finite | Base64 | 10 | |
| yeongtak | Modular Arithmetic 1 | 20 | |
| Magixx | Extended GCD | 20 | |
| yeongtak | Extended GCD | 20 | |
| wyaptw | Legendre Symbol | 35 | |
| finite | Hex | 5 | |
| nissapra | Base64 | 10 | |
| cyy968144 | Hex | 5 | |
| KhizerRaza | ASCII | 5 | |
| yeongtak | Greatest Common Divisor | 15 | |
| finite | ASCII | 5 | |
| geuple | Base64 | 10 | |
| nissapra | Hex | 5 | |
| wyaptw | Quadratic Residues | 25 | |
| krypts | Bytes and Big Integers | 10 | |
| zeroboat | XOR Starter | 10 | |
| Ludo10 | Resisting Bruteforce | 10 | |
| geuple | Hex | 5 | |
| Ludo10 | Keyed Permutations | 5 | |
| geuple | ASCII | 5 | |
| finite | Great Snakes | 3 | |
| geuple | Great Snakes | 3 | |
| sally2002 | Hex | 5 | |
| geuple | Finding Flags | 2 | |
| nissapra | ASCII | 5 | |
| dapa_ayayyy | Modular Exponentiation | 10 | |
| KhizerRaza | Great Snakes | 3 | |
| sally2002 | ASCII | 5 | |
| abdelhak | Encoding Challenge | 40 | |
| nissapra | Great Snakes | 3 | |
| lucky123 | Successive Powers | 60 | |
| sally2002 | Great Snakes | 3 | |
| Xirius | Diffusion through Permutation | 30 |
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