| Date | User | Challenge | Score |
| 1375185311 | Greatest Common Divisor | 15 | |
| haidar_rafli | You either know, XOR you don't | 30 | |
| Antonio6459 | Modular Square Root | 35 | |
| Tr0p1que | You either know, XOR you don't | 30 | |
| zwaxsk | You either know, XOR you don't | 30 | |
| peaceword | Finding Flags | 2 | |
| Makawett | Confusion through Substitution | 25 | |
| Khaisie | Modular Binomials | 80 | |
| wjdwoghd | Extended GCD | 20 | |
| zwaxsk | Favourite byte | 20 | |
| renvan | Great Snakes | 3 | |
| Khaisie | Adrien's Signs | 80 | |
| Khaisie | Chinese Remainder Theorem | 40 | |
| Khaisie | Modular Square Root | 35 | |
| kaettli | Secure Protocols | 5 | |
| kataracz | Quadratic Residues | 25 | |
| zwaxsk | XOR Properties | 15 | |
| Skypace | XOR Starter | 10 | |
| haidar_rafli | Favourite byte | 20 | |
| zwaxsk | XOR Starter | 10 | |
| Ultrametric | Quadratic Residues | 25 | |
| Blank12 | Great Snakes | 3 | |
| meow_cat | Favourite byte | 20 | |
| wooferguy | You either know, XOR you don't | 30 | |
| Car0l | Greatest Common Divisor | 15 | |
| Makawett | Round Keys | 20 | |
| zwaxsk | Bytes and Big Integers | 10 | |
| wooferguy | Favourite byte | 20 | |
| 0xFFFFFF | Generators of Groups | 20 | |
| kyonn286 | Quadratic Residues | 25 | |
| Khaisie | Legendre Symbol | 35 | |
| Khaisie | Quadratic Residues | 25 | |
| Khaisie | Modular Inverting | 25 | |
| Makawett | Structure of AES | 15 | |
| Khaisie | Modular Arithmetic 2 | 20 | |
| snowwit | Lemur XOR | 40 | |
| Khaisie | Modular Arithmetic 1 | 20 | |
| renvan | Finding Flags | 2 | |
| haidar_rafli | XOR Properties | 15 | |
| Khaisie | Extended GCD | 20 | |
| Khaisie | Greatest Common Divisor | 15 | |
| Skypace | Bytes and Big Integers | 10 | |
| itadori002 | Base64 | 10 | |
| Tr0p1que | Favourite byte | 20 | |
| goosebud21 | Bean Counter | 60 | |
| DoomAgent | Base64 | 10 | |
| knd | Modular Arithmetic 2 | 20 | |
| snowwit | You either know, XOR you don't | 30 | |
| Hari_new | Network Attacks | 5 | |
| interwinhous3 | XOR Properties | 15 |
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