| Date | User | Challenge | Score |
| Velk | Modular Arithmetic 2 | 20 | |
| gfuzo24 | Hex | 5 | |
| acarmenis | Private Keys | 20 | |
| gfuzo24 | ASCII | 5 | |
| gfuzo24 | Great Snakes | 3 | |
| TryH4rder | ASCII | 5 | |
| acarmenis | Euler's Totient | 20 | |
| kirat12596 | No Way JOSE | 20 | |
| Klaudia | Quadratic Residues | 25 | |
| acarmenis | Public Keys | 15 | |
| slimebvs | Structure of AES | 15 | |
| B00177175_Andre | Everything is Big | 70 | |
| TryH4rder | Great Snakes | 3 | |
| monassar | Bytes and Big Integers | 10 | |
| gfuzo24 | Finding Flags | 2 | |
| gpful | Structure of AES | 15 | |
| grabczak | Quadratic Residues | 25 | |
| emdy | XOR Properties | 15 | |
| acarmenis | Modular Exponentiation | 10 | |
| TryH4rder | Finding Flags | 2 | |
| Velk | Modular Arithmetic 1 | 20 | |
| VillamBarna | Greatest Common Divisor | 15 | |
| monassar | Base64 | 10 | |
| anastef | Decrypting TLS 1.3 | 35 | |
| slimebvs | Resisting Bruteforce | 10 | |
| Velk | Extended GCD | 20 | |
| noura | Generators of Groups | 20 | |
| noura | Computing Public Values | 25 | |
| leobermudez007 | Modular Exponentiation | 10 | |
| AbuudA | XOR Starter | 10 | |
| CoffeDevCR | Modular Exponentiation | 10 | |
| noura | Working with Fields | 10 | |
| slimebvs | Keyed Permutations | 5 | |
| jhin4444 | You either know, XOR you don't | 30 | |
| AbuudA | Bytes and Big Integers | 10 | |
| francois | Vote for Pedro | 150 | |
| jhin4444 | Favourite byte | 20 | |
| noura | Stream of Consciousness | 80 | |
| thinhh0x1l | XOR Properties | 15 | |
| Rybashka | Curveball | 100 | |
| noura | CTRIME | 70 | |
| jhin4444 | XOR Properties | 15 | |
| Menegaldo | Crossed Wires | 100 | |
| jhin4444 | XOR Starter | 10 | |
| Menegaldo | Everything is Big | 70 | |
| a1om | You either know, XOR you don't | 30 | |
| Menegaldo | Square Eyes | 35 | |
| gim | Resisting Bruteforce | 10 | |
| jhin4444 | Bytes and Big Integers | 10 | |
| Kospatt | Modular Square Root | 35 |
You are now level Current level