| Date | User | Challenge | Score |
| noobboymk | Great Snakes | 3 | |
| nakanpro | Modular Arithmetic 1 | 20 | |
| maimaiprincess | You either know, XOR you don't | 30 | |
| Brad3017 | Quadratic Residues | 25 | |
| ar4iks667 | Network Attacks | 5 | |
| noobboymk | Finding Flags | 2 | |
| nakanpro | Extended GCD | 20 | |
| donatsell | Bringing It All Together | 50 | |
| Brad3017 | Modular Inverting | 25 | |
| Brad3017 | Modular Arithmetic 2 | 20 | |
| ahmqd | Megalomaniac 1 | 100 | |
| Brad3017 | Modular Arithmetic 1 | 20 | |
| ar4iks667 | Great Snakes | 3 | |
| ar4iks667 | Finding Flags | 2 | |
| Brad3017 | Extended GCD | 20 | |
| Durdona_020693 | Finding Flags | 2 | |
| NuerisCore | Bytes and Big Integers | 10 | |
| asadbek177 | Finding Flags | 2 | |
| nakanpro | Greatest Common Divisor | 15 | |
| LQUICK | XOR Starter | 10 | |
| donatsell | Diffusion through Permutation | 30 | |
| donatsell | Confusion through Substitution | 25 | |
| maimaiprincess | Favourite byte | 20 | |
| Einstein_mugambi | Greatest Common Divisor | 15 | |
| donatsell | Round Keys | 20 | |
| Brad3017 | Greatest Common Divisor | 15 | |
| Revenge | Great Snakes | 3 | |
| cyberri | Edwards Goes Degenerate | 100 | |
| Mellivora | Modular Arithmetic 2 | 20 | |
| donatsell | Structure of AES | 15 | |
| Asadbek17 | Finding Flags | 2 | |
| Revenge | Finding Flags | 2 | |
| keanism | Let's Decrypt Again | 175 | |
| keanism | Vote for Pedro | 150 | |
| tsukubasan | Bytes and Big Integers | 10 | |
| keanism | Blinding Light | 120 | |
| keanism | Let's Decrypt | 80 | |
| keanism | Signing Server | 60 | |
| keanism | Null or Never | 100 | |
| keanism | Bespoke Padding | 100 | |
| keanism | RSA Backdoor Viability | 175 | |
| keanism | Ron was Wrong, Whit is Right | 90 | |
| keanism | Fast Primes | 75 | |
| grazkaa | Size and Basis | 15 | |
| keanism | Marin's Secrets | 50 | |
| keanism | Infinite Descent | 50 | |
| keanism | Endless Emails | 150 | |
| keanism | Everything is Still Big | 100 | |
| 07Nero07 | XOR Starter | 10 | |
| keanism | Crossed Wires | 100 |
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