| Date | User | Challenge | Score |
| starorange | Hex | 5 | |
| gathman | Lemur XOR | 40 | |
| A2RU | Invariant | 250 | |
| JvThunder | Special Soundness | 25 | |
| Stellrux | Great Snakes | 3 | |
| Sadness7 | Quadratic Residues | 25 | |
| A2RU | Mixed Up | 120 | |
| starorange | ASCII | 5 | |
| silder | Salty | 20 | |
| Stellrux | Finding Flags | 2 | |
| w4nted_1uffy_09 | Hex | 5 | |
| qslg | Fischlin's Transformation (CryptoHack) | 0 | |
| max10afternoon | RSA Decryption | 20 | |
| qslg | Fischlin Transform | 180 | |
| Quine | Everything is Big | 70 | |
| A2RU | MDFlag | 125 | |
| A2RU | MD0 | 80 | |
| max10afternoon | Private Keys | 20 | |
| ElmiraVerdiyeva | ASCII | 5 | |
| silder | Manyprime | 40 | |
| JvThunder | Proofs of Knowledge | 20 | |
| w4nted_1uffy_09 | ASCII | 5 | |
| qslg | Hamiltonicity 1 | 100 | |
| max10afternoon | Euler's Totient | 20 | |
| qslg | Hamiltonicity (CryptoHack) | 0 | |
| hmd0102 | Logon Zero | 80 | |
| w4nted_1uffy_09 | Great Snakes | 3 | |
| max10afternoon | Public Keys | 15 | |
| max10afternoon | Modular Exponentiation | 10 | |
| Stupid_Fish | ASCII | 5 | |
| Quine | Modulus Inutilis | 50 | |
| venatus9 | Confusion through Substitution | 25 | |
| ElmiraVerdiyeva | Great Snakes | 3 | |
| XR3Y | Curves and Logs | 40 | |
| JvThunder | Lo-Hi Card Game | 120 | |
| antoario | Bean Counter | 60 | |
| ElmiraVerdiyeva | Finding Flags | 2 | |
| Stupid_Fish | Great Snakes | 3 | |
| YousefNein | Finding Flags | 2 | |
| w4nted_1uffy_09 | Finding Flags | 2 | |
| hmd0102 | CTRIME | 70 | |
| antoario | Symmetry | 50 | |
| Stupid_Fish | Finding Flags | 2 | |
| antoario | Flipping Cookie | 60 | |
| LBN789 | Bean Counter | 60 | |
| antoario | ECB CBC WTF | 55 | |
| 1tsRyd3r | Flipping Cookie | 60 | |
| satvika | Lazy CBC | 60 | |
| winsed20 | You either know, XOR you don't | 30 | |
| Ba1sars | Modular Arithmetic 1 | 20 |
You are now level Current level