| Date | User | Challenge | Score |
| Naja | Bytes and Big Integers | 10 | |
| 1375185311 | You either know, XOR you don't | 30 | |
| UGOTTHEBIGL | Efficient Exchange | 50 | |
| kintaro | Chinese Remainder Theorem | 40 | |
| cafecafe | Chinese Remainder Theorem | 40 | |
| LostExcalibur | Favourite byte | 20 | |
| EveN | Modular Exponentiation | 10 | |
| kintaro | Modular Square Root | 35 | |
| LostExcalibur | XOR Properties | 15 | |
| Naja | Base64 | 10 | |
| cafecafe | Modular Square Root | 35 | |
| ATLH | ASCII | 5 | |
| LostExcalibur | XOR Starter | 10 | |
| Charicha56 | Bytes and Big Integers | 10 | |
| Naja | Hex | 5 | |
| meow_cat | XOR Properties | 15 | |
| LostExcalibur | Bytes and Big Integers | 10 | |
| SigmaMonster | Everything is Big | 70 | |
| LostExcalibur | Base64 | 10 | |
| LostExcalibur | Network Attacks | 5 | |
| por1linux | XOR Properties | 15 | |
| Wisdom_doom | XOR Starter | 10 | |
| LostExcalibur | Quadratic Residues | 25 | |
| HIHELLo | Euler's Totient | 20 | |
| DylDawg | Structure of AES | 15 | |
| HIHELLo | Public Keys | 15 | |
| nkfle | Favourite byte | 20 | |
| Charicha56 | Base64 | 10 | |
| aezwcg2875 | Hex | 5 | |
| HIHELLo | Modular Exponentiation | 10 | |
| Malik10208 | You either know, XOR you don't | 30 | |
| lemwin | Adrien's Signs | 80 | |
| cafecafe | Legendre Symbol | 35 | |
| nkfle | XOR Properties | 15 | |
| Sir_Finick | Base64 | 10 | |
| LostExcalibur | Hex | 5 | |
| diegofrm64 | Authenticated Handshake | 40 | |
| cynth | XOR Starter | 10 | |
| LostExcalibur | ASCII | 5 | |
| LostExcalibur | Great Snakes | 3 | |
| Muhammadsodiq | Jack's Birthday Confusion | 30 | |
| MrPriv4te | Finding Flags | 2 | |
| cynth | Bytes and Big Integers | 10 | |
| Muhammadsodiq | Jack's Birthday Hash | 20 | |
| LostExcalibur | Finding Flags | 2 | |
| cynth | Base64 | 10 | |
| Malik10208 | Favourite byte | 20 | |
| SigmaMonster | Square Eyes | 35 | |
| UGOTTHEBIGL | Curves and Logs | 40 | |
| cynth | Hex | 5 |
You are now level Current level