| Date | User | Challenge | Score |
| KK5559D | Manyprime | 40 | |
| capucapu | Modular Inverting | 25 | |
| capucapu | Modular Arithmetic 2 | 20 | |
| capucapu | Modular Arithmetic 1 | 20 | |
| steeeve | Structure of AES | 15 | |
| capucapu | Extended GCD | 20 | |
| DontBurnTree | Encoding Challenge | 40 | |
| capucapu | Greatest Common Divisor | 15 | |
| capucapu | You either know, XOR you don't | 30 | |
| hanahiennguyen | You either know, XOR you don't | 30 | |
| Jasper13425 | Base64 | 10 | |
| RAVEN_031 | Gram Schmidt | 30 | |
| Jasper13425 | Hex | 5 | |
| Churchil | Bringing It All Together | 50 | |
| ronrikwed | You either know, XOR you don't | 30 | |
| Jasper13425 | ASCII | 5 | |
| capucapu | Favourite byte | 20 | |
| Jasper13425 | Great Snakes | 3 | |
| Jasper13425 | Finding Flags | 2 | |
| Myronarty | Network Attacks | 5 | |
| azimfiy | Base64 | 10 | |
| lydxn | Authenticated Handshake | 40 | |
| capucapu | XOR Properties | 15 | |
| jetpack | Base64 | 10 | |
| Zcaesar | Modular Arithmetic 2 | 20 | |
| jonnytang | Everything is Big | 70 | |
| LALA______2026 | XOR Starter | 10 | |
| Wequra | Resisting Bruteforce | 10 | |
| httperror | Confusion through Substitution | 25 | |
| G30 | Greatest Common Divisor | 15 | |
| nevershot13men | Crossed Wires | 100 | |
| G30 | Lemur XOR | 40 | |
| ronrikwed | Favourite byte | 20 | |
| Zcaesar | Modular Arithmetic 1 | 20 | |
| Abdou2A | Greatest Common Divisor | 15 | |
| yoloDKSH | Great Snakes | 3 | |
| nevershot13men | Everything is Big | 70 | |
| yoloDKSH | Finding Flags | 2 | |
| httperror | Round Keys | 20 | |
| G30 | Encoding Challenge | 40 | |
| httperror | Structure of AES | 15 | |
| ronrikwed | XOR Properties | 15 | |
| chr1sk3ly | Transparency | 50 | |
| Wequra | Keyed Permutations | 5 | |
| httperror | Resisting Bruteforce | 10 | |
| chr1sk3ly | SSH Keys | 35 | |
| jskeob | Euler's Totient | 20 | |
| Lewa | Symmetry | 50 | |
| nathaniel_nolife | Working with Fields | 10 | |
| jskeob | Public Keys | 15 |
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