| Date | User | Challenge | Score |
| noname260 | Greatest Common Divisor | 15 | |
| deltaonetrooper | XOR Starter | 10 | |
| ynwa_ | CERTainly not | 30 | |
| magellan | XOR Properties | 15 | |
| yyfsec | Structure of AES | 15 | |
| s3gf4ult | Script Kiddie | 70 | |
| sana956283 | Legendre Symbol | 35 | |
| ynwa_ | Privacy-Enhanced Mail? | 25 | |
| thinh104az | XOR Properties | 15 | |
| abhieeee123 | Lemur XOR | 40 | |
| Asema | Bytes and Big Integers | 10 | |
| jiojio | Favourite byte | 20 | |
| UserAf | Modular Inverting | 25 | |
| ___K___ | Privacy-Enhanced Mail? | 25 | |
| abhieeee123 | Modular Inverting | 25 | |
| DrCryAtt | Extended GCD | 20 | |
| abhieeee123 | Modular Arithmetic 2 | 20 | |
| M25 | ASCII | 5 | |
| abhieeee123 | Modular Arithmetic 1 | 20 | |
| abhieeee123 | Extended GCD | 20 | |
| shadiya | Transparency | 50 | |
| magellan | XOR Starter | 10 | |
| sana956283 | Network Attacks | 5 | |
| i_Love_Ramona | Collider | 50 | |
| s3gf4ult | Static Client 2 | 120 | |
| ynwa_ | Lemur XOR | 40 | |
| eyzxq | Base64 | 10 | |
| UserAf | Modular Arithmetic 2 | 20 | |
| magellan | Bytes and Big Integers | 10 | |
| havzbayz | Hex | 5 | |
| BADWARE | Bringing It All Together | 50 | |
| eyzxq | Hex | 5 | |
| yyfsec | Resisting Bruteforce | 10 | |
| magellan | Base64 | 10 | |
| eyzxq | ASCII | 5 | |
| alinurlic1 | Base64 | 10 | |
| eyzxq | Great Snakes | 3 | |
| Asema | Base64 | 10 | |
| sana956283 | Quadratic Residues | 25 | |
| sana956283 | Modular Inverting | 25 | |
| noname260 | Favourite byte | 20 | |
| magellan | Hex | 5 | |
| sana956283 | Modular Arithmetic 2 | 20 | |
| eyzxq | Finding Flags | 2 | |
| sana956283 | Modular Arithmetic 1 | 20 | |
| magellan | ASCII | 5 | |
| lll111 | Transparency | 50 | |
| LFM023 | Where's the Supersingular Curve | 25 | |
| sana956283 | XOR Properties | 15 | |
| magellan | Great Snakes | 3 |
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