| Date | User | Challenge | Score |
| kdetAch | Adrien's Signs | 80 | |
| liangmeigang | Montgomery's Ladder | 40 | |
| d4pr0 | Lo-Hi Card Game | 120 | |
| whitecat111 | ASCII | 5 | |
| yrighting | Network Attacks | 5 | |
| kdetAch | Chinese Remainder Theorem | 40 | |
| kdetAch | Modular Square Root | 35 | |
| kdetAch | Legendre Symbol | 35 | |
| kdetAch | Quadratic Residues | 25 | |
| kdetAch | Modular Inverting | 25 | |
| kdetAch | Modular Arithmetic 2 | 20 | |
| kdetAch | Modular Arithmetic 1 | 20 | |
| kdetAch | Extended GCD | 20 | |
| Meidum | XOR Starter | 10 | |
| kdetAch | Greatest Common Divisor | 15 | |
| whitecat111 | Great Snakes | 3 | |
| kdetAch | You either know, XOR you don't | 30 | |
| cyk0sure | Roll your Own | 125 | |
| whitecat111 | Finding Flags | 2 | |
| rytui | Base64 | 10 | |
| rytui | Hex | 5 | |
| kdetAch | Favourite byte | 20 | |
| kdetAch | XOR Properties | 15 | |
| Muabyka | Finding Flags | 2 | |
| RatherHard | Curves and Logs | 40 | |
| rytui | ASCII | 5 | |
| kdetAch | XOR Starter | 10 | |
| DavidTruong | An Exceptional Twisted Mind | 125 | |
| Meidum | Bytes and Big Integers | 10 | |
| kdetAch | Bytes and Big Integers | 10 | |
| shahadatshuvo | Bytes and Big Integers | 10 | |
| kdetAch | Base64 | 10 | |
| kdetAch | Hex | 5 | |
| kdetAch | ASCII | 5 | |
| kdetAch | Great Snakes | 3 | |
| Meidum | Base64 | 10 | |
| RatherHard | Scalar Multiplication | 35 | |
| shahadatshuvo | Base64 | 10 | |
| kdetAch | Finding Flags | 2 | |
| RatherHard | Point Addition | 30 | |
| Meidum | Hex | 5 | |
| shahadatshuvo | Hex | 5 | |
| Darkshine | ASCII | 5 | |
| xxcsthm | Finding Flags | 2 | |
| Meidum | ASCII | 5 | |
| zhubat | Modular Square Root | 35 | |
| belajarr | ASCII | 5 | |
| Meidum | Great Snakes | 3 | |
| syadidd | Bringing It All Together | 50 | |
| lydiah | Export-grade | 100 |
You are now level Current level