| Date | User | Challenge | Score |
| Doemae | Favourite byte | 20 | |
| lazybreak | Quadratic Residues | 25 | |
| Doemae | XOR Properties | 15 | |
| AndreAzu | Base64 | 10 | |
| ling88 | Favourite byte | 20 | |
| AndreAzu | Hex | 5 | |
| pillo | Base64 | 10 | |
| Doemae | XOR Starter | 10 | |
| AndreAzu | ASCII | 5 | |
| DBFTBS | Collider | 50 | |
| Doemae | Bytes and Big Integers | 10 | |
| pillo | Hex | 5 | |
| hninmyatthuaye | Chinese Remainder Theorem | 40 | |
| hninmyatthuaye | Modular Square Root | 35 | |
| AndreAzu | Great Snakes | 3 | |
| hninmyatthuaye | Legendre Symbol | 35 | |
| nagiaaa | Modular Inverting | 25 | |
| Doemae | Base64 | 10 | |
| AndreAzu | Finding Flags | 2 | |
| nagiaaa | Modular Arithmetic 2 | 20 | |
| kelur | Bytes and Big Integers | 10 | |
| pillo | ASCII | 5 | |
| king3326 | Modular Arithmetic 2 | 20 | |
| Doemae | Hex | 5 | |
| SISroot | Oracular Spectacular | 150 | |
| Doemae | ASCII | 5 | |
| nagiaaa | Modular Arithmetic 1 | 20 | |
| yonasoft | Finding Flags | 2 | |
| Doemae | Great Snakes | 3 | |
| uwualien | Factoring | 15 | |
| Doemae | Finding Flags | 2 | |
| king3326 | Modular Arithmetic 1 | 20 | |
| GGB | Finding Flags | 2 | |
| pillo | Great Snakes | 3 | |
| IMU | SSH Keys | 35 | |
| pillo | Finding Flags | 2 | |
| ling88 | XOR Properties | 15 | |
| kelur | Base64 | 10 | |
| jimmy20180130 | Resisting Bruteforce | 10 | |
| chaotic_thought1 | You either know, XOR you don't | 30 | |
| jimmy20180130 | Keyed Permutations | 5 | |
| P3ekaboo | Bringing It All Together | 50 | |
| saro | OR Proof | 75 | |
| phat1911 | Point Addition | 30 | |
| ethereal_666 | Modular Square Root | 35 | |
| jimmy20180130 | Legendre Symbol | 35 | |
| Loidx | Structure of AES | 15 | |
| zhh | Dancing Queen | 120 | |
| Sovann7 | XOR Properties | 15 | |
| lllll | Generators of Groups | 20 |
You are now level Current level