| Date | User | Challenge | Score |
| rizzz | Bytes and Big Integers | 10 | |
| rizzz | Base64 | 10 | |
| Oshiks | Round Keys | 20 | |
| Engf | Hex | 5 | |
| rizzz | Hex | 5 | |
| gchiu02 | Diffusion through Permutation | 30 | |
| rizzz | ASCII | 5 | |
| jaeu1341 | Bean Counter | 60 | |
| rizzz | Great Snakes | 3 | |
| yoyosarefun | Modular Square Root | 35 | |
| spinflipper31415 | Round Keys | 20 | |
| Engf | ASCII | 5 | |
| Engf | Great Snakes | 3 | |
| Engf | Finding Flags | 2 | |
| Beethoven3 | Gaussian Reduction | 50 | |
| nahsor | Base64 | 10 | |
| Ridik | XOR Properties | 15 | |
| Hasanbayov | XOR Starter | 10 | |
| shay_kob | Favourite byte | 20 | |
| MilesTillo | Modular Inverting | 25 | |
| MilesTillo | Modular Arithmetic 2 | 20 | |
| johnthecipherbre | RSA Decryption | 20 | |
| cryptohack720 | Adrien's Signs | 80 | |
| MilesTillo | Modular Arithmetic 1 | 20 | |
| johnthecipherbre | Private Keys | 20 | |
| MilesTillo | Extended GCD | 20 | |
| kurimochi | Modular Square Root | 35 | |
| gchiu02 | Confusion through Substitution | 25 | |
| Nada34 | Finding Flags | 2 | |
| MilesTillo | Greatest Common Divisor | 15 | |
| jayjaysson | Finding Flags | 2 | |
| nahsor | Hex | 5 | |
| MilesTillo | Lemur XOR | 40 | |
| shay_kob | XOR Properties | 15 | |
| shura356 | LWE Background | 5 | |
| MilesTillo | Encoding Challenge | 40 | |
| spinflipper31415 | Structure of AES | 15 | |
| rania56 | Base64 | 10 | |
| shay_kob | XOR Starter | 10 | |
| Beethoven3 | What's a Lattice? | 40 | |
| nahsor | ASCII | 5 | |
| MilesTillo | You either know, XOR you don't | 30 | |
| shura356 | Backpack Cryptography | 120 | |
| MilesTillo | Favourite byte | 20 | |
| Mmaxiem | Finding Flags | 2 | |
| shay_kob | Bytes and Big Integers | 10 | |
| MilesTillo | XOR Properties | 15 | |
| AND_OSS_1 | Legendre Symbol | 35 | |
| MilesTillo | XOR Starter | 10 | |
| rania56 | Hex | 5 |
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