| Date | User | Challenge | Score |
| isacq | XOR Properties | 15 | |
| Jason_bourne | ASCII | 5 | |
| alexx | You either know, XOR you don't | 30 | |
| Grupo07MA | Modular Inverting | 25 | |
| Grupo07MA | Modular Arithmetic 2 | 20 | |
| titoBR | Favourite byte | 20 | |
| alexx | Favourite byte | 20 | |
| RicardoBorbon | Great Snakes | 3 | |
| lautaroterzano | Network Attacks | 5 | |
| isacq | XOR Starter | 10 | |
| Grupo07MA | Modular Arithmetic 1 | 20 | |
| th31g34rh34d | You either know, XOR you don't | 30 | |
| RicardoBorbon | Finding Flags | 2 | |
| isacq | Encoding Challenge | 40 | |
| titoBR | XOR Properties | 15 | |
| issolis | Greatest Common Divisor | 15 | |
| inanothertime | Great Snakes | 3 | |
| inanothertime | Finding Flags | 2 | |
| Grupo07MA | Extended GCD | 20 | |
| isacq | Bytes and Big Integers | 10 | |
| Oglegoman | Greatest Common Divisor | 15 | |
| Alduin54 | Network Attacks | 5 | |
| KyleLee | Gotta Go Fast | 40 | |
| alexx | XOR Properties | 15 | |
| KyleLee | Modular Binomials | 80 | |
| Alduin54 | Great Snakes | 3 | |
| Oglegoman | You either know, XOR you don't | 30 | |
| Oglegoman | Favourite byte | 20 | |
| mchllrss76 | Finding Flags | 2 | |
| alexx | XOR Starter | 10 | |
| jimun | You either know, XOR you don't | 30 | |
| Oglegoman | XOR Properties | 15 | |
| neru | Base64 | 10 | |
| alexx | Bytes and Big Integers | 10 | |
| issolis | Favourite byte | 20 | |
| alexx | Base64 | 10 | |
| alexx | Hex | 5 | |
| Aliengirl420 | XOR Starter | 10 | |
| issolis | XOR Properties | 15 | |
| alexx | ASCII | 5 | |
| C4mpoJUL | Base64 | 10 | |
| vas_fountas | Saying Hello | 20 | |
| neru | Hex | 5 | |
| th31g34rh34d | Favourite byte | 20 | |
| alexx | Great Snakes | 3 | |
| alexx | Finding Flags | 2 | |
| C4mpoJUL | Hex | 5 | |
| vas_fountas | TLS Handshake | 15 | |
| th31g34rh34d | XOR Properties | 15 | |
| C4mpoJUL | ASCII | 5 |
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