| Date | User | Challenge | Score |
| orisharim | Resisting Bruteforce | 10 | |
| orisharim | Keyed Permutations | 5 | |
| TsilivakosGeorge | Private Keys | 20 | |
| Acrobatis22 | Secure Protocols | 5 | |
| Ugandis | Greatest Common Divisor | 15 | |
| V01dGh0st | Bytes and Big Integers | 10 | |
| nar | Great Snakes | 3 | |
| totonito | Working with Fields | 10 | |
| zeroshot | Great Snakes | 3 | |
| Cat87399 | XOR Properties | 15 | |
| zeroshot | Finding Flags | 2 | |
| nar | Finding Flags | 2 | |
| Ret2skillz | Extended GCD | 20 | |
| Emilijus | XOR Properties | 15 | |
| Ret2skillz | Greatest Common Divisor | 15 | |
| stamatia_psalti | Export-grade | 100 | |
| Baiden | Hex | 5 | |
| mikuleci | Fast Primes | 75 | |
| mikuleci | Marin's Secrets | 50 | |
| mikuleci | Infinite Descent | 50 | |
| aRDit | Great Snakes | 3 | |
| unknown12 | Real Curve Crypto | 200 | |
| kokkalakos | Private Keys | 20 | |
| V01dGh0st | Base64 | 10 | |
| aRDit | Finding Flags | 2 | |
| Baiden | ASCII | 5 | |
| y0dam4n | Working with Fields | 10 | |
| Ret2skillz | Lemur XOR | 40 | |
| krom6666 | Favourite byte | 20 | |
| kokkalakos | Euler's Totient | 20 | |
| Emilijus | XOR Starter | 10 | |
| Vasileios01 | Modular Arithmetic 1 | 20 | |
| Lemon28 | Modular Arithmetic 1 | 20 | |
| Vasileios01 | Extended GCD | 20 | |
| Vasileios01 | Lemur XOR | 40 | |
| Baiden | Great Snakes | 3 | |
| kokkalakos | Public Keys | 15 | |
| Vexdru | Diffusion through Permutation | 30 | |
| mikuleci | Bean Counter | 60 | |
| RayTheDev | Hex | 5 | |
| chaiwon | RSA Decryption | 20 | |
| mikuleci | ECB Oracle | 60 | |
| Cat87399 | XOR Starter | 10 | |
| b33braun | Greatest Common Divisor | 15 | |
| unknown12 | Oh SNAP | 120 | |
| krom6666 | XOR Properties | 15 | |
| atty | Transparency | 50 | |
| tudaiobratno | Symmetry | 50 | |
| Vasileios01 | You either know, XOR you don't | 30 | |
| kokkalakos | Modular Exponentiation | 10 |
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