| Date | User | Challenge | Score |
| Amet | Quadratic Residues | 25 | |
| Amet | Modular Inverting | 25 | |
| Amet | Modular Arithmetic 2 | 20 | |
| tacex_ | Favourite byte | 20 | |
| Amet | Modular Arithmetic 1 | 20 | |
| Bb1313 | Finding Flags | 2 | |
| Bunnyboy | Greatest Common Divisor | 15 | |
| Amet | Extended GCD | 20 | |
| DavidTruong | Special Soundness | 25 | |
| Amet | Greatest Common Divisor | 15 | |
| tacex_ | XOR Properties | 15 | |
| steellmagnolia99 | Great Snakes | 3 | |
| Amet | You either know, XOR you don't | 30 | |
| steellmagnolia99 | Finding Flags | 2 | |
| Amet | Favourite byte | 20 | |
| Amet | XOR Properties | 15 | |
| pypy | CTRIME | 70 | |
| tacex_ | XOR Starter | 10 | |
| tacex_ | Bytes and Big Integers | 10 | |
| tacex_ | Base64 | 10 | |
| Amet | XOR Starter | 10 | |
| tacex_ | Hex | 5 | |
| tacex_ | ASCII | 5 | |
| Nunca | Bytes and Big Integers | 10 | |
| Hulkinout | Finding Flags | 2 | |
| tacex_ | Great Snakes | 3 | |
| Amet | Bytes and Big Integers | 10 | |
| feynhat | Passwords as Keys | 50 | |
| aizer3 | Legendre Symbol | 35 | |
| Amet | Base64 | 10 | |
| tacex_ | Finding Flags | 2 | |
| Nunca | Base64 | 10 | |
| Amet | Network Attacks | 5 | |
| KMA_SiriuS_ | Lemur XOR | 40 | |
| Nunca | Hex | 5 | |
| kevin21 | Great Snakes | 3 | |
| Nunca | ASCII | 5 | |
| miiyen | Exceptional Curves | 100 | |
| SuiChan_wa | Diffusion through Permutation | 30 | |
| fft | Hex | 5 | |
| fft | ASCII | 5 | |
| fft | Great Snakes | 3 | |
| exoq | Generators of Groups | 20 | |
| fft | Finding Flags | 2 | |
| Nunca | Network Attacks | 5 | |
| Nunca | Great Snakes | 3 | |
| kevin21 | Finding Flags | 2 | |
| Vinjr | JWT Secrets | 25 | |
| exoq | Working with Fields | 10 | |
| exoq | Modulus Inutilis | 50 |
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