| Date | User | Challenge | Score |
| xiaoyuxuan | Legendre Symbol | 35 | |
| SDFDFSEE | Greatest Common Divisor | 15 | |
| Gondowt | Passwords as Keys | 50 | |
| Hackerpriya | Finding Flags | 2 | |
| Beci911 | Modular Square Root | 35 | |
| atakilti | Bytes and Big Integers | 10 | |
| zhang2005 | Favourite byte | 20 | |
| lelemona | Base64 | 10 | |
| G4ME0Ver | XOR Properties | 15 | |
| Arielonchis | Great Snakes | 3 | |
| l3th4l | Network Attacks | 5 | |
| G4ME0Ver | XOR Starter | 10 | |
| FONE | Modular Square Root | 35 | |
| kirollosR | Bytes and Big Integers | 10 | |
| NatsuGwada | XOR Properties | 15 | |
| FONE | Legendre Symbol | 35 | |
| RecursiveCo | Round Keys | 20 | |
| Beci911 | Legendre Symbol | 35 | |
| NatsuGwada | XOR Starter | 10 | |
| l3th4l | XOR Starter | 10 | |
| zxklwq | Round Keys | 20 | |
| xiaoyuxuan | Quadratic Residues | 25 | |
| SeifAhmed | Hex | 5 | |
| atakilti | Base64 | 10 | |
| NatsuGwada | Bytes and Big Integers | 10 | |
| SeifAhmed | ASCII | 5 | |
| NatsuGwada | Base64 | 10 | |
| xiaoyuxuan | Modular Inverting | 25 | |
| G4ME0Ver | Bytes and Big Integers | 10 | |
| zzx | Quadratic Residues | 25 | |
| FONE | Quadratic Residues | 25 | |
| xiaoyuxuan | Modular Arithmetic 2 | 20 | |
| zzx | Modular Inverting | 25 | |
| SeifAhmed | Network Attacks | 5 | |
| han1014 | You either know, XOR you don't | 30 | |
| xiaoyuxuan | Modular Arithmetic 1 | 20 | |
| zzx | Modular Arithmetic 2 | 20 | |
| RecursiveCo | Structure of AES | 15 | |
| xiaoyuxuan | Extended GCD | 20 | |
| limingxue | Quadratic Residues | 25 | |
| FONE | Modular Inverting | 25 | |
| atakilti | Hex | 5 | |
| limingxue | Modular Inverting | 25 | |
| zzx | Modular Arithmetic 1 | 20 | |
| FONE | Modular Arithmetic 2 | 20 | |
| limingxue | Modular Arithmetic 2 | 20 | |
| Beci911 | Quadratic Residues | 25 | |
| limingxue | Modular Arithmetic 1 | 20 | |
| G4ME0Ver | ASCII | 5 | |
| FONE | Modular Arithmetic 1 | 20 |
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