| Date | User | Challenge | Score |
| dess | ASCII | 5 | |
| KALKALICH | Quadratic Residues | 25 | |
| Rom4ik | Quadratic Residues | 25 | |
| zetelen | Modular Arithmetic 2 | 20 | |
| Rom4ik | Modular Inverting | 25 | |
| SPJ | Base64 | 10 | |
| KALKALICH | Modular Inverting | 25 | |
| zetelen | Modular Arithmetic 1 | 20 | |
| skxrty | Hex | 5 | |
| shadowgreessed | Hex | 5 | |
| Joxlong | Generators of Groups | 20 | |
| KALKALICH | Modular Arithmetic 2 | 20 | |
| Rom4ik | Modular Arithmetic 2 | 20 | |
| KALKALICH | Modular Arithmetic 1 | 20 | |
| KALKALICH | Extended GCD | 20 | |
| Rom4ik | Modular Arithmetic 1 | 20 | |
| Emikron | Public Keys | 15 | |
| Rom4ik | Extended GCD | 20 | |
| Rom4ik | Greatest Common Divisor | 15 | |
| Olive9620 | Modular Inverting | 25 | |
| Emikron | Modular Exponentiation | 10 | |
| dilka | Finding Flags | 2 | |
| zetelen | Extended GCD | 20 | |
| zetelen | Greatest Common Divisor | 15 | |
| Olive9620 | Modular Arithmetic 2 | 20 | |
| AlinaTyshUKR | Great Snakes | 3 | |
| zetelen | XOR Starter | 10 | |
| Youri_Han | Keyed Permutations | 5 | |
| Timur9999u88 | Finding Flags | 2 | |
| flecseer | Hex | 5 | |
| zetelen | Base64 | 10 | |
| KALKALICH | Greatest Common Divisor | 15 | |
| ii76 | Keyed Permutations | 5 | |
| AkaiKitsune_2107 | ECB Oracle | 60 | |
| yarikprooo | Hex | 5 | |
| KALKALICH | You either know, XOR you don't | 30 | |
| KALKALICH | Favourite byte | 20 | |
| KALKALICH | XOR Properties | 15 | |
| flecseer | ASCII | 5 | |
| KALKALICH | XOR Starter | 10 | |
| flecseer | Great Snakes | 3 | |
| pipspops | XOR Properties | 15 | |
| yarikprooo | ASCII | 5 | |
| kharsanovvv | Finding Flags | 2 | |
| syndir | Salty | 20 | |
| flecseer | Finding Flags | 2 | |
| HyobinChoi | Flipping Cookie | 60 | |
| Rom4ik | You either know, XOR you don't | 30 | |
| Rom4ik | Favourite byte | 20 | |
| Rom4ik | XOR Properties | 15 |
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