| Date | User | Challenge | Score |
| liverpolloser | You either know, XOR you don't | 30 | |
| Cvetaca | Computing Public Values | 25 | |
| liverpolloser | Favourite byte | 20 | |
| liverpolloser | XOR Properties | 15 | |
| 0xkryvon | You either know, XOR you don't | 30 | |
| RexCube | ASCII | 5 | |
| clemensGooooo | Null or Never | 100 | |
| Reshma | Great Snakes | 3 | |
| 0xkryvon | Favourite byte | 20 | |
| 0xkryvon | XOR Properties | 15 | |
| Cvetaca | Generators of Groups | 20 | |
| Kodyvim | Modular Arithmetic 1 | 20 | |
| fatehr15 | Modular Binomials | 80 | |
| charles_m | Symmetry | 50 | |
| 0xkryvon | XOR Starter | 10 | |
| RexCube | Great Snakes | 3 | |
| 0xkryvon | Bytes and Big Integers | 10 | |
| ONEDAY24X7 | XOR Starter | 10 | |
| ONEDAY24X7 | Bytes and Big Integers | 10 | |
| OranS | Modular Inverting | 25 | |
| 0xkryvon | Base64 | 10 | |
| ONEDAY24X7 | Base64 | 10 | |
| lightingstar1 | Token Appreciation | 5 | |
| 0xkryvon | Hex | 5 | |
| ghx312 | Lemur XOR | 40 | |
| ONEDAY24X7 | Hex | 5 | |
| PanosT250 | Resisting Bruteforce | 10 | |
| lightingstar1 | Transparency | 50 | |
| 0xkryvon | ASCII | 5 | |
| RexCube | Finding Flags | 2 | |
| Cvetaca | Working with Fields | 10 | |
| PanosT250 | Keyed Permutations | 5 | |
| lightingstar1 | Jack's Birthday Confusion | 30 | |
| andsopwn | What's a Lattice? | 40 | |
| 0xkryvon | Great Snakes | 3 | |
| ONEDAY24X7 | ASCII | 5 | |
| ghx312 | Encoding Challenge | 40 | |
| 0xkryvon | Finding Flags | 2 | |
| ONEDAY24X7 | Great Snakes | 3 | |
| OranS | Modular Arithmetic 2 | 20 | |
| lightingstar1 | Encoding Challenge | 40 | |
| OranS | Modular Arithmetic 1 | 20 | |
| mppl2404 | Modular Binomials | 80 | |
| waks | Bytes and Big Integers | 10 | |
| layth_j | Public Keys | 15 | |
| Cvetaca | Transparency | 50 | |
| lightingstar1 | RSA Decryption | 20 | |
| lightingstar1 | Private Keys | 20 | |
| lightingstar1 | Euler's Totient | 20 | |
| layth_j | Modular Exponentiation | 10 |
You are now level Current level