| Date | User | Challenge | Score |
| Razza | Base64 | 10 | |
| nysfatimahna | You either know, XOR you don't | 30 | |
| inanothertime | SSH Keys | 35 | |
| r18 | Finding Flags | 2 | |
| Razza | Hex | 5 | |
| brayitan | Modular Inverting | 25 | |
| brayitan | Modular Arithmetic 2 | 20 | |
| brayitan | Modular Arithmetic 1 | 20 | |
| brayitan | Extended GCD | 20 | |
| brayitan | Greatest Common Divisor | 15 | |
| thefless | Keyed Permutations | 5 | |
| hakka52 | Collider | 50 | |
| R0b1n | Modular Square Root | 35 | |
| Razza | ASCII | 5 | |
| inanothertime | CERTainly not | 30 | |
| nysfatimahna | Favourite byte | 20 | |
| brayitan | You either know, XOR you don't | 30 | |
| brayitan | Favourite byte | 20 | |
| vas_fountas | Decrypting TLS 1.3 | 35 | |
| brayitan | XOR Properties | 15 | |
| Kiixzoo | Base64 | 10 | |
| brayitan | XOR Starter | 10 | |
| inanothertime | Privacy-Enhanced Mail? | 25 | |
| vas_fountas | Decrypting TLS 1.2 | 30 | |
| Razza | Finding Flags | 2 | |
| Oglegoman | Private Keys | 20 | |
| Oglegoman | Euler's Totient | 20 | |
| Kahfi30134 | Modular Inverting | 25 | |
| Oglegoman | Public Keys | 15 | |
| Oglegoman | Modular Exponentiation | 10 | |
| nysfatimahna | XOR Properties | 15 | |
| lautaroterzano | Greatest Common Divisor | 15 | |
| kd3army | Modular Inverting | 25 | |
| kd3army | Modular Arithmetic 2 | 20 | |
| Kahfi30134 | Modular Arithmetic 1 | 20 | |
| kd3army | Modular Arithmetic 1 | 20 | |
| kd3army | Extended GCD | 20 | |
| inanothertime | Modular Arithmetic 1 | 20 | |
| nysfatimahna | XOR Starter | 10 | |
| Diffusee | Hex | 5 | |
| kd3army | Greatest Common Divisor | 15 | |
| inanothertime | Extended GCD | 20 | |
| KyleLee | No Leaks | 100 | |
| Diffusee | Finding Flags | 2 | |
| ys512 | Bytes and Big Integers | 10 | |
| lautaroterzano | Lemur XOR | 40 | |
| kd3army | You either know, XOR you don't | 30 | |
| khyrr | Crossed Wires | 100 | |
| Kiixzoo | Network Attacks | 5 | |
| nysfatimahna | Bytes and Big Integers | 10 |
You are now level Current level