| Date | User | Challenge | Score |
| MisOo | Extended GCD | 20 | |
| VKcyber | Modular Inverting | 25 | |
| mnasssef | Base64 | 10 | |
| VKcyber | Modular Arithmetic 2 | 20 | |
| MisOo | Greatest Common Divisor | 15 | |
| BOUILLON | Great Snakes | 3 | |
| Cashrel | Base64 | 10 | |
| 0xzaika | Base64 | 10 | |
| cryptoRiO | Common Ground | 75 | |
| Ruro | XOR Properties | 15 | |
| Cashrel | Hex | 5 | |
| waveww | You either know, XOR you don't | 30 | |
| LuckyTheCat | Bytes and Big Integers | 10 | |
| Cashrel | ASCII | 5 | |
| BOUILLON | Finding Flags | 2 | |
| mnasssef | Hex | 5 | |
| NoBirdWasHam | Moving Problems | 150 | |
| Cashrel | Great Snakes | 3 | |
| GoldenGrey | Base64 | 10 | |
| VKcyber | Modular Arithmetic 1 | 20 | |
| Zukane | Common Ground | 75 | |
| Cashrel | Finding Flags | 2 | |
| MisOo | You either know, XOR you don't | 30 | |
| jskeob | Logon Zero | 80 | |
| KMuJu | Nothing Up My Sleeve | 150 | |
| MisOo | Favourite byte | 20 | |
| wulouiiiiiiiiii9 | Greatest Common Divisor | 15 | |
| VKcyber | Extended GCD | 20 | |
| MisOo | XOR Properties | 15 | |
| karthikas_08 | Base64 | 10 | |
| LuckyTheCat | Base64 | 10 | |
| mnasssef | ASCII | 5 | |
| GoldenGrey | Hex | 5 | |
| lvcv4y | Let's Decrypt | 80 | |
| 0xzaika | Hex | 5 | |
| A_M_E | Modular Square Root | 35 | |
| Skypace | Modulus Inutilis | 50 | |
| mricking2048 | Modes of Operation Starter | 15 | |
| LuckyTheCat | Hex | 5 | |
| mnasssef | Great Snakes | 3 | |
| aryaardian573 | Export-grade | 100 | |
| GoldenGrey | ASCII | 5 | |
| aryaardian573 | Parameter Injection | 60 | |
| Ruro | Bytes and Big Integers | 10 | |
| aryaardian573 | Deriving Symmetric Keys | 40 | |
| aryaardian573 | Computing Shared Secrets | 30 | |
| aryaardian573 | Computing Public Values | 25 | |
| aryaardian573 | Generators of Groups | 20 | |
| aryaardian573 | Working with Fields | 10 | |
| aryaardian573 | Modulus Inutilis | 50 |
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