| Date | User | Challenge | Score |
| r777_ | Bringing It All Together | 50 | |
| SuiChan_wa | Transparency | 50 | |
| Spirit12 | Chinese Remainder Theorem | 40 | |
| r777_ | Diffusion through Permutation | 30 | |
| Galxee | Favourite byte | 20 | |
| j_m | OR Proof | 75 | |
| r777_ | Confusion through Substitution | 25 | |
| starnotes | Adrien's Signs | 80 | |
| r777_ | Round Keys | 20 | |
| yideng | Modular Square Root | 35 | |
| r777_ | Structure of AES | 15 | |
| r777_ | Resisting Bruteforce | 10 | |
| nanaSword | Finding Flags | 2 | |
| r777_ | Keyed Permutations | 5 | |
| r777_ | Transparency | 50 | |
| r777_ | Encoding Challenge | 40 | |
| r777_ | SSH Keys | 35 | |
| sermba29 | Finding Flags | 2 | |
| r777_ | CERTainly not | 30 | |
| farisha | Moving Problems | 150 | |
| r777_ | Privacy-Enhanced Mail? | 25 | |
| kurumi_11 | Efficient Exchange | 50 | |
| farisha | Elliptic Nodes | 150 | |
| darkone | Modular Arithmetic 2 | 20 | |
| farisha | Micro Transmissions | 120 | |
| r777_ | Modular Inverting | 25 | |
| r777_ | Modular Arithmetic 2 | 20 | |
| lapa | Deriving Symmetric Keys | 40 | |
| r777_ | Modular Arithmetic 1 | 20 | |
| Aryaethn | Couples | 100 | |
| r777_ | Extended GCD | 20 | |
| farisha | Exceptional Curves | 100 | |
| farisha | Smooth Criminal | 60 | |
| r777_ | Greatest Common Divisor | 15 | |
| r777_ | Lemur XOR | 40 | |
| farisha | Efficient Exchange | 50 | |
| farisha | Curves and Logs | 40 | |
| farisha | Scalar Multiplication | 35 | |
| CookedRavioli | Legendre Symbol | 35 | |
| farisha | Point Addition | 30 | |
| farisha | Point Negation | 10 | |
| r777_ | You either know, XOR you don't | 30 | |
| Galxee | XOR Properties | 15 | |
| farisha | Background Reading | 5 | |
| AgneseRJ | Great Snakes | 3 | |
| r777_ | Favourite byte | 20 | |
| r777_ | XOR Properties | 15 | |
| Spirit12 | Modular Square Root | 35 | |
| c0ffe3e | You either know, XOR you don't | 30 | |
| r777_ | XOR Starter | 10 |
You are now level Current level