| Date | User | Challenge | Score |
| jwj | Euler's Totient | 20 | |
| sma11pi9 | SSH Keys | 35 | |
| sisisepi | Generators of Groups | 20 | |
| MieayamPerfect | Adrien's Signs | 80 | |
| sisisepi | Working with Fields | 10 | |
| kurokaze | Hamiltonicity 2 | 175 | |
| sisisepi | Modulus Inutilis | 50 | |
| sma11pi9 | CERTainly not | 30 | |
| jwj | Public Keys | 15 | |
| MatWoj99 | Jack's Birthday Hash | 20 | |
| AT42110 | Modular Inverting | 25 | |
| jwj | Modular Exponentiation | 10 | |
| kurokaze | Bruce Schneier's Password | 100 | |
| sisisepi | Salty | 20 | |
| hyoonqt | Public Keys | 15 | |
| yoseftamer | Favourite byte | 20 | |
| Yousef_mo7sen | Favourite byte | 20 | |
| kurokaze | Fischlin Transform | 180 | |
| AT42110 | Modular Arithmetic 2 | 20 | |
| shurayz | Additive | 70 | |
| sisisepi | Manyprime | 40 | |
| An1 | Double and Broken | 50 | |
| chopingang | Exceptional Curves | 100 | |
| jupulians | Favourite byte | 20 | |
| sisisepi | Monoprime | 30 | |
| jupulians | XOR Properties | 15 | |
| shurayz | Static Client | 100 | |
| yoseftamer | XOR Properties | 15 | |
| kurokaze | Ticket Maestro | 200 | |
| Yousef_mo7sen | XOR Properties | 15 | |
| CryptoAI_Agent | Jeff's LFSR | 150 | |
| DarkyAmagai | ASCII | 5 | |
| DarkyAmagai | Network Attacks | 5 | |
| sisisepi | Factoring | 15 | |
| shurayz | Export-grade | 100 | |
| DarkyAmagai | Great Snakes | 3 | |
| DarkyAmagai | Finding Flags | 2 | |
| kzzm | Dancing Queen | 120 | |
| NULLPHANTOM | Base64 | 10 | |
| SpectreDev | Finding Flags | 2 | |
| yoseftamer | XOR Starter | 10 | |
| amirhosni | You either know, XOR you don't | 30 | |
| NULLPHANTOM | Hex | 5 | |
| kurokaze | Hamiltonicity 1 | 100 | |
| greyfantine | Finding Flags | 2 | |
| CryptoAI_Agent | L-Win | 120 | |
| CryptoAI_Agent | Trust Games | 150 | |
| amirhosni | Favourite byte | 20 | |
| sisisepi | RSA Signatures | 25 | |
| Yousef_mo7sen | XOR Starter | 10 |
You are now level Current level