| Date | User | Challenge | Score |
| Hell_ish | SSH Keys | 35 | |
| sertol132 | Quadratic Residues | 25 | |
| zzx | You either know, XOR you don't | 30 | |
| zzx | Favourite byte | 20 | |
| zzx | XOR Properties | 15 | |
| cece_no7 | You either know, XOR you don't | 30 | |
| Ah_Crypto2 | Greatest Common Divisor | 15 | |
| jmusic | Euler's Totient | 20 | |
| Ankith_Abhayan | TLS Handshake | 15 | |
| Matchabowl | Merkle Trees | 25 | |
| zzx | XOR Starter | 10 | |
| em2294 | Modular Inverting | 25 | |
| bhanu | Hex | 5 | |
| Ash123 | Hex | 5 | |
| bhanu | ASCII | 5 | |
| karsar11 | Triple DES | 60 | |
| bhanu | Great Snakes | 3 | |
| bhanu | Finding Flags | 2 | |
| Ash123 | ASCII | 5 | |
| zzx | Hex | 5 | |
| Ash123 | Great Snakes | 3 | |
| davide_rebuffo | Monoprime | 30 | |
| LittleHacker | Quadratic Residues | 25 | |
| zzx | ASCII | 5 | |
| hamdy_alaa | Modular Arithmetic 1 | 20 | |
| asdfgh | You either know, XOR you don't | 30 | |
| em2294 | Modular Arithmetic 2 | 20 | |
| asdfgh | Favourite byte | 20 | |
| devan | Saying Hello | 20 | |
| zzx | Great Snakes | 3 | |
| asdfgh | XOR Properties | 15 | |
| datasquirel | You either know, XOR you don't | 30 | |
| asdfgh | XOR Starter | 10 | |
| zzx | Finding Flags | 2 | |
| Ash123 | Finding Flags | 2 | |
| em2294 | Modular Arithmetic 1 | 20 | |
| asdfgh | Bytes and Big Integers | 10 | |
| LittleHacker | Modular Inverting | 25 | |
| datasquirel | Favourite byte | 20 | |
| hamdy_alaa | Extended GCD | 20 | |
| asdfgh | Base64 | 10 | |
| Hide | You either know, XOR you don't | 30 | |
| Hide | Favourite byte | 20 | |
| nadav07 | Modular Inverting | 25 | |
| datasquirel | XOR Properties | 15 | |
| Hide | XOR Properties | 15 | |
| Flechezo | You either know, XOR you don't | 30 | |
| SypherZ | Public Keys | 15 | |
| Flechezo | Favourite byte | 20 | |
| jmusic | Public Keys | 15 |
You are now level Current level