| Date | User | Challenge | Score |
| T1mday | XOR Starter | 10 | |
| Iatae | Modular Arithmetic 2 | 20 | |
| Kospatt | Salty | 20 | |
| Shiva19 | Gaussian Reduction | 50 | |
| k4ngroo | Modular Arithmetic 1 | 20 | |
| Aeneas7 | ZKP Introduction | 5 | |
| akki_ikka | Monoprime | 30 | |
| amunium | Null or Never | 100 | |
| caesuki | Salty | 20 | |
| Aeneas7 | From Private to Public Key LWE | 25 | |
| Iatae | Modular Arithmetic 1 | 20 | |
| aman_k0203 | Hex | 5 | |
| hopenotfound | Hex | 5 | |
| Aeneas7 | LWE High Bits Message | 15 | |
| Aeneas7 | LWE Low Bits Message | 20 | |
| caesuki | Manyprime | 40 | |
| caesuki | Square Eyes | 35 | |
| aman_k0203 | ASCII | 5 | |
| caesuki | Monoprime | 30 | |
| caesuki | Inferius Prime | 30 | |
| blueketchup | You either know, XOR you don't | 30 | |
| caesuki | Factoring | 15 | |
| caesuki | RSA Signatures | 25 | |
| konradsz3 | Script Kiddie | 70 | |
| caesuki | RSA Decryption | 20 | |
| caesuki | Private Keys | 20 | |
| caesuki | Euler's Totient | 20 | |
| caesuki | Public Keys | 15 | |
| caesuki | Modular Exponentiation | 10 | |
| karlakovacs | Base64 | 10 | |
| karlakovacs | Hex | 5 | |
| Iatae | Extended GCD | 20 | |
| blueketchup | Favourite byte | 20 | |
| karlakovacs | ASCII | 5 | |
| itamar_rot | Mixed Up | 120 | |
| SB112 | Backpack Cryptography | 120 | |
| akki_ikka | Factoring | 15 | |
| konradsz3 | Static Client 2 | 120 | |
| Iatae | Greatest Common Divisor | 15 | |
| blueketchup | XOR Properties | 15 | |
| osihlovec | Gaussian Reduction | 50 | |
| aman_k0203 | Great Snakes | 3 | |
| Dinde121 | Quadratic Residues | 25 | |
| caizer | Base64 | 10 | |
| ctfuzername | Deriving Symmetric Keys | 40 | |
| blueketchup | XOR Starter | 10 | |
| aman_k0203 | Finding Flags | 2 | |
| itamar_rot | No Difference | 175 | |
| Iatae | You either know, XOR you don't | 30 | |
| osihlovec | What's a Lattice? | 40 |
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