| Date | User | Challenge | Score |
| Vic144 | Modular Binomials | 80 | |
| dmart297 | Finding Flags | 2 | |
| aliarkan | Favourite byte | 20 | |
| kora | Base64 | 10 | |
| Keks0 | ASCII | 5 | |
| aliarkan | XOR Properties | 15 | |
| alexjmead | Curves and Logs | 40 | |
| shivamsah | Parameter Injection | 60 | |
| Keks0 | Great Snakes | 3 | |
| Keks0 | Finding Flags | 2 | |
| Matrix | Modular Inverting | 25 | |
| aliarkan | XOR Starter | 10 | |
| xmerlinx | Bytes and Big Integers | 10 | |
| julesfress | Confusion through Substitution | 25 | |
| Amir05 | Base64 | 10 | |
| Matrix | Modular Arithmetic 2 | 20 | |
| bsvac | Let's Decrypt | 80 | |
| xmerlinx | Base64 | 10 | |
| Matrix | Modular Arithmetic 1 | 20 | |
| alexjmead | Scalar Multiplication | 35 | |
| Matrix | Extended GCD | 20 | |
| xmerlinx | Hex | 5 | |
| xmerlinx | ASCII | 5 | |
| xmerlinx | Great Snakes | 3 | |
| Raferior | Bytes and Big Integers | 10 | |
| Matrix | Greatest Common Divisor | 15 | |
| xmerlinx | Finding Flags | 2 | |
| aliarkan | Bytes and Big Integers | 10 | |
| xfnx | Too Honest | 50 | |
| shokapikfort | TLS Handshake | 15 | |
| xfnx | Non-Interactive | 35 | |
| Raferior | Base64 | 10 | |
| Amir05 | Hex | 5 | |
| cyb_org | Keyed Permutations | 5 | |
| xfnx | Honest Verifier Zero Knowledge | 30 | |
| bsvac | Signing Server | 60 | |
| four0four | Monoprime | 30 | |
| bertholdus | Modular Arithmetic 2 | 20 | |
| Vic144 | Adrien's Signs | 80 | |
| dXNlcm5hbWU_ | Modes of Operation Starter | 15 | |
| Raferior | Hex | 5 | |
| bertholdus | Modular Arithmetic 1 | 20 | |
| youko | Great Snakes | 3 | |
| youko | Finding Flags | 2 | |
| Amir05 | ASCII | 5 | |
| Raferior | ASCII | 5 | |
| bertholdus | Extended GCD | 20 | |
| spinflipper31415 | ASCII | 5 | |
| bsvac | Null or Never | 100 | |
| Raferior | Great Snakes | 3 |
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