| Date | User | Challenge | Score |
| Elsol | ASCII | 5 | |
| Ahmed_Mohanad | Great Snakes | 3 | |
| EmmaLehec | Factoring | 15 | |
| arz | ECB Oracle | 60 | |
| Ahmed_Mohanad | Finding Flags | 2 | |
| Elsol | Great Snakes | 3 | |
| henril | Modular Square Root | 35 | |
| titanicballs | Favourite byte | 20 | |
| msoto | CERTainly not | 30 | |
| titanicballs | XOR Properties | 15 | |
| msoto | Privacy-Enhanced Mail? | 25 | |
| Elsol | Finding Flags | 2 | |
| titanicballs | XOR Starter | 10 | |
| msoto | Modular Inverting | 25 | |
| EmmaLehec | RSA Decryption | 20 | |
| titanicballs | Bytes and Big Integers | 10 | |
| DrAwper | Base64 | 10 | |
| DrAwper | Hex | 5 | |
| msoto | Modular Arithmetic 2 | 20 | |
| LeoJ | XOR Properties | 15 | |
| DrAwper | ASCII | 5 | |
| titanicballs | Base64 | 10 | |
| Sayge | Confusion through Substitution | 25 | |
| DrAwper | Great Snakes | 3 | |
| DrAwper | Finding Flags | 2 | |
| msoto | Modular Arithmetic 1 | 20 | |
| msoto | Extended GCD | 20 | |
| ma7rouga | You either know, XOR you don't | 30 | |
| titanicballs | Hex | 5 | |
| qslg | Merkle Trees | 25 | |
| msoto | Greatest Common Divisor | 15 | |
| EmmaLehec | Private Keys | 20 | |
| ma7rouga | Favourite byte | 20 | |
| Kheeto | Generators of Groups | 20 | |
| Mandazi404 | ASCII | 5 | |
| ma7rouga | XOR Properties | 15 | |
| titanicballs | ASCII | 5 | |
| EmmaLehec | Euler's Totient | 20 | |
| titanicballs | Great Snakes | 3 | |
| ma7rouga | XOR Starter | 10 | |
| AESpider | André Encoding | 80 | |
| titanicballs | Finding Flags | 2 | |
| EmmaLehec | Public Keys | 15 | |
| Oliver_isanolive | Legendre Symbol | 35 | |
| Kheeto | Working with Fields | 10 | |
| Kairo_ops | Modular Inverting | 25 | |
| Sugr33va | You either know, XOR you don't | 30 | |
| lcalvie | Export-grade | 100 | |
| qthang | Smooth Criminal | 60 | |
| pAtr | Finding Flags | 2 |
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