| Date | User | Challenge | Score |
| TTiny | Modular Inverting | 25 | |
| ramhuw | Adrien's Signs | 80 | |
| CountryPANDA | Favourite byte | 20 | |
| Wequra | Parameter Injection | 60 | |
| pardev | You either know, XOR you don't | 30 | |
| pardev | Favourite byte | 20 | |
| pardev | XOR Properties | 15 | |
| moonheesung | Marin's Secrets | 50 | |
| Wequra | Deriving Symmetric Keys | 40 | |
| pardev | XOR Starter | 10 | |
| pardev | Bytes and Big Integers | 10 | |
| pardev | Base64 | 10 | |
| JackXas | Symmetry | 50 | |
| SimplifyTy | Great Snakes | 3 | |
| Wequra | Computing Shared Secrets | 30 | |
| pardev | Hex | 5 | |
| SimplifyTy | Finding Flags | 2 | |
| DavidTruong | Too Honest | 50 | |
| JackXas | Flipping Cookie | 60 | |
| Wequra | Computing Public Values | 25 | |
| PJ696769 | Modular Binomials | 80 | |
| JackXas | ECB CBC WTF | 55 | |
| selectride | Everything is Big | 70 | |
| pardev | ASCII | 5 | |
| pardev | Great Snakes | 3 | |
| pardev | Finding Flags | 2 | |
| ramhuw | Chinese Remainder Theorem | 40 | |
| ramhuw | Modular Square Root | 35 | |
| abraham404 | Hex | 5 | |
| lemming | You either know, XOR you don't | 30 | |
| abraham404 | ASCII | 5 | |
| d1nhdwc | Modular Exponentiation | 10 | |
| xx33xx | Modular Inverting | 25 | |
| HaxL0p4 | Greatest Common Divisor | 15 | |
| xx33xx | Modular Arithmetic 2 | 20 | |
| xx33xx | Modular Arithmetic 1 | 20 | |
| fazslll | Bringing It All Together | 50 | |
| P0WER | CERTainly not | 30 | |
| Tonghedocon | LFSR Destroyer | 250 | |
| kucheraviy | Hex | 5 | |
| augustourqui | Hex | 5 | |
| kevin21 | You either know, XOR you don't | 30 | |
| Dr1o02 | Symmetry | 50 | |
| JCPTY507 | Lemur XOR | 40 | |
| kucheraviy | ASCII | 5 | |
| Cerades | André Encoding | 80 | |
| JCPTY507 | You either know, XOR you don't | 30 | |
| Camelotflag | Hex | 5 | |
| Tonghedocon | Jeff's LFSR | 150 | |
| Cerades | What's My Kernel | 70 |
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