| Date | User | Challenge | Score |
| Otisku | XOR Starter | 10 | |
| Imrane2003 | Base64 | 10 | |
| 2651111005 | Bytes and Big Integers | 10 | |
| Konstantin_Kim | Adrien's Signs | 80 | |
| Imrane2003 | Hex | 5 | |
| doanhaphong | Resisting Bruteforce | 10 | |
| Konstantin_Kim | Chinese Remainder Theorem | 40 | |
| Konstantin_Kim | Modular Square Root | 35 | |
| Otisku | Bytes and Big Integers | 10 | |
| Imrane2003 | ASCII | 5 | |
| rice_cooker | XOR Starter | 10 | |
| Konstantin_Kim | Legendre Symbol | 35 | |
| MohabAlmohammed | Great Snakes | 3 | |
| Otherwise_Ocelot | Network Attacks | 5 | |
| urbashi_1122 | Round Keys | 20 | |
| VicAde | Great Snakes | 3 | |
| zxc1810556537 | Favourite byte | 20 | |
| Raymond18 | ASCII | 5 | |
| Otisku | Base64 | 10 | |
| Imrane2003 | Great Snakes | 3 | |
| daymondx | Great Snakes | 3 | |
| zxc1810556537 | XOR Properties | 15 | |
| daymondx | Finding Flags | 2 | |
| vdvufdnvudv | Great Snakes | 3 | |
| Averocs | Resisting Bruteforce | 10 | |
| Konstantin_Kim | Quadratic Residues | 25 | |
| Otisku | Hex | 5 | |
| Averocs | Keyed Permutations | 5 | |
| 00085 | XOR Starter | 10 | |
| Konstantin_Kim | Modular Inverting | 25 | |
| Konstantin_Kim | Modular Arithmetic 2 | 20 | |
| zxc1810556537 | XOR Starter | 10 | |
| Konstantin_Kim | Modular Arithmetic 1 | 20 | |
| Konstantin_Kim | Extended GCD | 20 | |
| Konstantin_Kim | Greatest Common Divisor | 15 | |
| alphaOne | Bytes and Big Integers | 10 | |
| Otisku | ASCII | 5 | |
| Otisku | Great Snakes | 3 | |
| ForBs | Favourite byte | 20 | |
| zxc1810556537 | Bytes and Big Integers | 10 | |
| Raymond18 | Great Snakes | 3 | |
| doanhaphong | Keyed Permutations | 5 | |
| Otisku | Finding Flags | 2 | |
| abualhesh | Great Snakes | 3 | |
| VicAde | Finding Flags | 2 | |
| urbashi_1122 | Structure of AES | 15 | |
| snvtix | Adrien's Signs | 80 | |
| Benjie | XOR Starter | 10 | |
| 00085 | Bytes and Big Integers | 10 | |
| Imrane2003 | Finding Flags | 2 |
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