| Date | User | Challenge | Score |
| lilyjane | Quadratic Residues | 25 | |
| peridot0x | Manyprime | 40 | |
| OKlllng | Chinese Remainder Theorem | 40 | |
| sowon | XOR Starter | 10 | |
| z8v5nr4d | Flipping Cookie | 60 | |
| AndyVale | Stream of Consciousness | 80 | |
| Indra45 | Base64 | 10 | |
| OKlllng | Modular Square Root | 35 | |
| Indra45 | Hex | 5 | |
| Indra45 | ASCII | 5 | |
| yrighting | Greatest Common Divisor | 15 | |
| 1tsRyd3r | Infinite Descent | 50 | |
| Velisar | Bytes and Big Integers | 10 | |
| Indra45 | Great Snakes | 3 | |
| Indra45 | Finding Flags | 2 | |
| mangoslayer | Great Snakes | 3 | |
| mangoslayer | Finding Flags | 2 | |
| lilyjane | Modular Inverting | 25 | |
| heeheeheehar | Three Isogenies | 35 | |
| jkendall | Passwords as Keys | 50 | |
| z8v5nr4d | ECB CBC WTF | 55 | |
| cavazinf | Diffusion through Permutation | 30 | |
| nk0 | What's My Kernel | 70 | |
| kruuze | Legendre Symbol | 35 | |
| randomusername_0 | Favourite byte | 20 | |
| OKlllng | Legendre Symbol | 35 | |
| yrighting | Finding Flags | 2 | |
| cavazinf | Confusion through Substitution | 25 | |
| z8v5nr4d | ECB Oracle | 60 | |
| knkl384038 | Modular Inverting | 25 | |
| heeheeheehar | Two Isogenies | 30 | |
| knkl384038 | Modular Arithmetic 2 | 20 | |
| annaliisa | Favourite byte | 20 | |
| drnikos | Symmetry | 50 | |
| ma7rouga | Network Attacks | 5 | |
| cavazinf | Round Keys | 20 | |
| hgjk | Finding Flags | 2 | |
| jkendall | Modes of Operation Starter | 15 | |
| Velisar | Base64 | 10 | |
| knkl384038 | Modular Arithmetic 1 | 20 | |
| Velisar | Hex | 5 | |
| EuSpPi | Base64 | 10 | |
| ma7rouga | Great Snakes | 3 | |
| ma7rouga | Finding Flags | 2 | |
| cavazinf | Structure of AES | 15 | |
| jkendall | Bringing It All Together | 50 | |
| annaliisa | XOR Properties | 15 | |
| randomusername_0 | XOR Properties | 15 | |
| bncybz | Broken RSA | 100 | |
| 3b7amidd | Modular Arithmetic 1 | 20 |
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