| Date | User | Challenge | Score |
| Jitgaikwad | Modular Arithmetic 1 | 20 | |
| miiyen | Inferius Prime | 30 | |
| capnolove | RSA Decryption | 20 | |
| Jitgaikwad | Extended GCD | 20 | |
| Jitgaikwad | Greatest Common Divisor | 15 | |
| Jitgaikwad | You either know, XOR you don't | 30 | |
| capnolove | Private Keys | 20 | |
| Jitgaikwad | Favourite byte | 20 | |
| Jitgaikwad | XOR Properties | 15 | |
| miiyen | Modular Arithmetic 1 | 20 | |
| Jitgaikwad | XOR Starter | 10 | |
| pacillians | Flipping Cookie | 60 | |
| Jitgaikwad | Bytes and Big Integers | 10 | |
| Jitgaikwad | Base64 | 10 | |
| miiyen | Extended GCD | 20 | |
| patawee | Modular Inverting | 25 | |
| Jitgaikwad | Hex | 5 | |
| 2HUB1 | You either know, XOR you don't | 30 | |
| rafaeldd91 | XOR Starter | 10 | |
| 2HUB1 | Favourite byte | 20 | |
| 2HUB1 | XOR Properties | 15 | |
| mari00 | You either know, XOR you don't | 30 | |
| 2HUB1 | XOR Starter | 10 | |
| patawee | Modular Arithmetic 2 | 20 | |
| 2HUB1 | Bytes and Big Integers | 10 | |
| patawee | Modular Arithmetic 1 | 20 | |
| rafaeldd91 | Bytes and Big Integers | 10 | |
| rafaeldd91 | Base64 | 10 | |
| mari00 | Favourite byte | 20 | |
| rafaeldd91 | Hex | 5 | |
| birdy | Finding Flags | 2 | |
| rafaeldd91 | ASCII | 5 | |
| 4Better | Base64 | 10 | |
| rafaeldd91 | Great Snakes | 3 | |
| patawee | Extended GCD | 20 | |
| mari00 | XOR Properties | 15 | |
| XCXRXYXPXTXOX | XOR Starter | 10 | |
| rafaeldd91 | Finding Flags | 2 | |
| Mago_Implacavel | The Matrix Reloaded | 100 | |
| XCXRXYXPXTXOX | Bytes and Big Integers | 10 | |
| mari00 | XOR Starter | 10 | |
| patawee | Greatest Common Divisor | 15 | |
| XCXRXYXPXTXOX | Base64 | 10 | |
| XCXRXYXPXTXOX | Hex | 5 | |
| mari00 | Bytes and Big Integers | 10 | |
| Sole | Signing Server | 60 | |
| Bkshell | You either know, XOR you don't | 30 | |
| patawee | You either know, XOR you don't | 30 | |
| m4n059 | ECB Oracle | 60 | |
| Bkshell | Favourite byte | 20 |
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