| Date | User | Challenge | Score |
| Namunamu | Point Negation | 10 | |
| edlks1379 | Legendre Symbol | 35 | |
| yaroslav | XOR Starter | 10 | |
| CyberSyndrome | Modular Arithmetic 1 | 20 | |
| RequiemGedo | Finding Flags | 2 | |
| ekdaz | Lemur XOR | 40 | |
| yaroslav | Bytes and Big Integers | 10 | |
| Neutr0nys | Stream of Consciousness | 80 | |
| Neutr0nys | Ron was Wrong, Whit is Right | 90 | |
| alaouinadi | Keyed Permutations | 5 | |
| torch | XOR Properties | 15 | |
| PangolinDormido | Base64 | 10 | |
| Banana_Babanana | Elliptic Nodes | 150 | |
| yaroslav | Base64 | 10 | |
| svenny | Encoding Challenge | 40 | |
| yaroslav | Hex | 5 | |
| yaroslav | ASCII | 5 | |
| grazkaa | Monoprime | 30 | |
| yaroslav | Great Snakes | 3 | |
| ekdaz | You either know, XOR you don't | 30 | |
| PangolinDormido | Hex | 5 | |
| grazkaa | Factoring | 15 | |
| CyberSyndrome | Extended GCD | 20 | |
| yaroslav | Finding Flags | 2 | |
| PangolinDormido | ASCII | 5 | |
| grazkaa | RSA Signatures | 25 | |
| boxvcu23 | Base64 | 10 | |
| sheina906 | Gaussian Reduction | 50 | |
| grazkaa | RSA Decryption | 20 | |
| JackyJuz | XOR Properties | 15 | |
| grazkaa | Private Keys | 20 | |
| ChinoCribioli | Decrypting TLS 1.3 | 35 | |
| pok | Hex | 5 | |
| Banana_Babanana | Micro Transmissions | 120 | |
| grazkaa | Euler's Totient | 20 | |
| grazkaa | Public Keys | 15 | |
| grazkaa | Modular Exponentiation | 10 | |
| Namunamu | Background Reading | 5 | |
| CyberSyndrome | Greatest Common Divisor | 15 | |
| pok | ASCII | 5 | |
| junyouzin4209 | Twist and Shout (Zh3r0 CTF V2) | 0 | |
| firedream | Transparency | 50 | |
| MikiJervis | Modulus Inutilis | 50 | |
| elpmorelos | Finding Flags | 2 | |
| Neutr0nys | The Good, The Pad, The Ugly | 100 | |
| pok | Great Snakes | 3 | |
| Gratitude | XOR Starter | 10 | |
| dimchee | ASCII | 5 | |
| firedream | SSH Keys | 35 | |
| pok | Finding Flags | 2 |
You are now level Current level