| Date | User | Challenge | Score |
| phat1911 | Private Keys | 20 | |
| subatomic | ASCII | 5 | |
| subatomic | Great Snakes | 3 | |
| subatomic | Finding Flags | 2 | |
| conor13rp | Find the Lattice | 100 | |
| bokthefish | Scalar Multiplication | 35 | |
| Khazap | ASCII | 5 | |
| kotoko | Confusion through Substitution | 25 | |
| Khazap | Great Snakes | 3 | |
| Khazap | Finding Flags | 2 | |
| jiuchengovo | Modular Inverting | 25 | |
| lucky123 | Curves and Logs | 40 | |
| ltwind_v2 | Couples | 100 | |
| 1tsRyd3r | Logon Zero | 80 | |
| jiuchengovo | Modular Arithmetic 2 | 20 | |
| 0x0n0m4d | XOR Starter | 10 | |
| blinkiew | Greatest Common Divisor | 15 | |
| cyk0sure | Square Eyes | 35 | |
| jiuchengovo | Modular Arithmetic 1 | 20 | |
| 0x0n0m4d | Bytes and Big Integers | 10 | |
| character | SSH Keys | 35 | |
| Mamgablou | Extended GCD | 20 | |
| jiuchengovo | Extended GCD | 20 | |
| cyk0sure | Inferius Prime | 30 | |
| kotoko | Round Keys | 20 | |
| Visitor001 | Modular Inverting | 25 | |
| character | CERTainly not | 30 | |
| nimo08 | Export-grade | 100 | |
| nimo08 | Parameter Injection | 60 | |
| jiuchengovo | Greatest Common Divisor | 15 | |
| nimo08 | Factoring | 15 | |
| phat1911 | Euler's Totient | 20 | |
| ltwind_v2 | Mister Saplin's Preview | 80 | |
| kotoko | Structure of AES | 15 | |
| kotoko | Resisting Bruteforce | 10 | |
| syadidd | Confusion through Substitution | 25 | |
| kzzm | Twin Keys | 100 | |
| anagharamadas | Great Snakes | 3 | |
| kotoko | Keyed Permutations | 5 | |
| Visitor001 | Modular Arithmetic 2 | 20 | |
| Visitor001 | Modular Arithmetic 1 | 20 | |
| character | Privacy-Enhanced Mail? | 25 | |
| anagharamadas | Finding Flags | 2 | |
| Visitor001 | Extended GCD | 20 | |
| lucky123 | Scalar Multiplication | 35 | |
| syadidd | Round Keys | 20 | |
| Samyakcoder12 | Modular Binomials | 80 | |
| blinkiew | You either know, XOR you don't | 30 | |
| phat1911 | Public Keys | 15 | |
| phat1911 | Modular Exponentiation | 10 |
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