| Date | User | Challenge | Score |
| perhaitaraul | Modular Arithmetic 2 | 20 | |
| pascscha | Jeff's LFSR | 150 | |
| tuxy0 | Rhetorical Oracle | 100 | |
| SM401 | Modular Binomials | 80 | |
| SM401 | Adrien's Signs | 80 | |
| SM401 | Chinese Remainder Theorem | 40 | |
| SM401 | Modular Square Root | 35 | |
| pascscha | Bit by Bit | 100 | |
| pascscha | L-Win | 120 | |
| mariaricah | Keyed Permutations | 5 | |
| pascscha | Armory | 100 | |
| SM401 | Legendre Symbol | 35 | |
| laabedmedsami | Manyprime | 40 | |
| pascscha | Pairing-Based Cryptography | 50 | |
| 1rii60 | Quadratic Residues | 25 | |
| mariaricah | You either know, XOR you don't | 30 | |
| SM401 | Quadratic Residues | 25 | |
| 1rii60 | Modular Inverting | 25 | |
| pascscha | RSA vs RNG | 150 | |
| SM401 | Modular Inverting | 25 | |
| SM401 | Modular Arithmetic 2 | 20 | |
| pascscha | ZKP Introduction | 5 | |
| SM401 | Modular Arithmetic 1 | 20 | |
| arjunychauhan | ASCII | 5 | |
| Connie6222 | Favourite byte | 20 | |
| SM401 | Extended GCD | 20 | |
| wizzjuice | XOR Properties | 15 | |
| SM401 | Greatest Common Divisor | 15 | |
| studentunique | Endless Emails | 150 | |
| SM401 | You either know, XOR you don't | 30 | |
| perhaitaraul | Modular Arithmetic 1 | 20 | |
| arjunychauhan | Great Snakes | 3 | |
| 1rii60 | Modular Arithmetic 2 | 20 | |
| Sardine | Quadratic Residues | 25 | |
| SM401 | Favourite byte | 20 | |
| SM401 | XOR Properties | 15 | |
| SM401 | XOR Starter | 10 | |
| SM401 | Bytes and Big Integers | 10 | |
| arjunychauhan | Finding Flags | 2 | |
| SM401 | Base64 | 10 | |
| SM401 | Hex | 5 | |
| SM401 | ASCII | 5 | |
| SM401 | Great Snakes | 3 | |
| mariaricah | Favourite byte | 20 | |
| bapuka | Finding Flags | 2 | |
| khangct | RSA Decryption | 20 | |
| VKcyber | Network Attacks | 5 | |
| 1rii60 | Modular Arithmetic 1 | 20 | |
| SM401 | Finding Flags | 2 | |
| pjw7102 | Great Snakes | 3 |
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