| Date | User | Challenge | Score |
| bjornsen | ASCII | 5 | |
| LvKNnT | TLS Handshake | 15 | |
| Red0psD3v4rsh007 | Diffusion through Permutation | 30 | |
| bjornsen | Great Snakes | 3 | |
| bjornsen | Finding Flags | 2 | |
| LvKNnT | Sharks on the Wire | 10 | |
| blackade | Legendre Symbol | 35 | |
| LvKNnT | Secure Protocols | 5 | |
| luckyman | Great Snakes | 3 | |
| luckyman | Finding Flags | 2 | |
| Benzene1002 | Great Snakes | 3 | |
| GHL | Find the Lattice | 100 | |
| Benzene1002 | Finding Flags | 2 | |
| Rangkiasm | Encoding Challenge | 40 | |
| airconditioner4 | Encoding Challenge | 40 | |
| hvp1908 | Greatest Common Divisor | 15 | |
| HoraHack | Bytes and Big Integers | 10 | |
| georgeanton4869 | Chinese Remainder Theorem | 40 | |
| HoraHack | Base64 | 10 | |
| hvp1908 | You either know, XOR you don't | 30 | |
| shura356 | The Good, The Pad, The Ugly | 100 | |
| HoraHack | Hex | 5 | |
| rsinato | Flipping Cookie | 60 | |
| skiller3478 | Additive | 70 | |
| quocnguyenpa | Working with Fields | 10 | |
| MrD | Deriving Symmetric Keys | 40 | |
| GHL | Gaussian Reduction | 50 | |
| quocnguyenpa | Modulus Inutilis | 50 | |
| MrD | Computing Shared Secrets | 30 | |
| HoraHack | ASCII | 5 | |
| sma11pi9 | Bean Counter | 60 | |
| Vermillionjtw | Base64 | 10 | |
| Ygx | Modular Binomials | 80 | |
| quocnguyenpa | Salty | 20 | |
| HoraHack | Great Snakes | 3 | |
| Vermillionjtw | Hex | 5 | |
| Ygx | Adrien's Signs | 80 | |
| Hanging_Tree | Salty | 20 | |
| Ygx | Chinese Remainder Theorem | 40 | |
| quocnguyenpa | Manyprime | 40 | |
| HoraHack | Finding Flags | 2 | |
| Ygx | Modular Square Root | 35 | |
| Vermillionjtw | ASCII | 5 | |
| VISAS_STARFROST | You either know, XOR you don't | 30 | |
| Vermillionjtw | Great Snakes | 3 | |
| Ygx | Legendre Symbol | 35 | |
| MrD | Computing Public Values | 25 | |
| Hanging_Tree | Monoprime | 30 | |
| Superior | Real Mersenne (Zh3r0 CTF V2) | 0 | |
| Vermillionjtw | Finding Flags | 2 |
You are now level Current level