| Date | User | Challenge | Score |
| bbaoaanh | No Way Back Home | 100 | |
| MoosaOrigano | XOR Starter | 10 | |
| harjottelu | Great Snakes | 3 | |
| harjottelu | Finding Flags | 2 | |
| DinosaurGrass | Great Snakes | 3 | |
| doquangluccqh | Resisting Bruteforce | 10 | |
| votranngocvy | ASCII | 5 | |
| MoosaOrigano | Bytes and Big Integers | 10 | |
| ako8 | XOR Properties | 15 | |
| votranngocvy | Great Snakes | 3 | |
| votranngocvy | Finding Flags | 2 | |
| Kosta | You either know, XOR you don't | 30 | |
| GabPapaye | Favourite byte | 20 | |
| doquangluccqh | Keyed Permutations | 5 | |
| kzzm | Static Client | 100 | |
| V1ckey | Marin's Secrets | 50 | |
| DinosaurGrass | Finding Flags | 2 | |
| khanhtai | Modular Square Root | 35 | |
| ako8 | XOR Starter | 10 | |
| SilverSpirit | Greatest Common Divisor | 15 | |
| vasilik1 | Base64 | 10 | |
| c0d4 | ECB Oracle | 60 | |
| SilverSpirit | Lemur XOR | 40 | |
| khanhtai | Legendre Symbol | 35 | |
| vasilik1 | Hex | 5 | |
| Gengg_ | Passwords as Keys | 50 | |
| V1ckey | Infinite Descent | 50 | |
| WhiteDeath16 | XOR Starter | 10 | |
| vasilik1 | ASCII | 5 | |
| BijirBijir | Bytes and Big Integers | 10 | |
| DavidN | XOR Properties | 15 | |
| QRms | LWE Background | 5 | |
| BijirBijir | Base64 | 10 | |
| Vinjr | LWE Background | 5 | |
| vasilik1 | Great Snakes | 3 | |
| Kosta | Favourite byte | 20 | |
| vasilik1 | Finding Flags | 2 | |
| 25520221 | Resisting Bruteforce | 10 | |
| BijirBijir | Hex | 5 | |
| Asterix22 | Passwords as Keys | 50 | |
| khanhtai | Modular Binomials | 80 | |
| 25520221 | Keyed Permutations | 5 | |
| poorlajka | Working with Fields | 10 | |
| lcalvie | Backpack Cryptography | 120 | |
| QRms | Gaussian Reduction | 50 | |
| AmineHDN | Finding Flags | 2 | |
| SypherZ | Manyprime | 40 | |
| 25520221 | Lemur XOR | 40 | |
| rfmph | Confusion through Substitution | 25 | |
| Kosta | XOR Properties | 15 |
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