| Date | User | Challenge | Score |
| ra_mn | Extended GCD | 20 | |
| Lenn | ASCII | 5 | |
| somesoo | The Matrix | 75 | |
| 01180766 | RSA Signatures | 25 | |
| jarvy5 | You either know, XOR you don't | 30 | |
| Karolina | Computing Public Values | 25 | |
| jarvy5 | Favourite byte | 20 | |
| jarvy5 | XOR Properties | 15 | |
| LucaMaguire81 | XOR Properties | 15 | |
| jarvy5 | XOR Starter | 10 | |
| somesoo | Script Kiddie | 70 | |
| Raven0X7 | Base64 | 10 | |
| jarvy5 | Bytes and Big Integers | 10 | |
| somesoo | Additive | 70 | |
| jarvy5 | Base64 | 10 | |
| jarvy5 | Hex | 5 | |
| jarvy5 | ASCII | 5 | |
| somesoo | Static Client | 100 | |
| jarvy5 | Great Snakes | 3 | |
| jarvy5 | Finding Flags | 2 | |
| Karolina | Generators of Groups | 20 | |
| Lenn | Great Snakes | 3 | |
| somesoo | Export-grade | 100 | |
| manuel_racle | XOR Properties | 15 | |
| somesoo | Parameter Injection | 60 | |
| Karolina | Working with Fields | 10 | |
| Lenn | Finding Flags | 2 | |
| somesoo | Deriving Symmetric Keys | 40 | |
| Max12123 | Greatest Common Divisor | 15 | |
| LucaMaguire81 | XOR Starter | 10 | |
| networksownus | Adrien's Signs | 80 | |
| T0PHAT | ASCII | 5 | |
| 1v1y | Great Snakes | 3 | |
| nkswapnil | You either know, XOR you don't | 30 | |
| 1v1y | Finding Flags | 2 | |
| somesoo | Computing Shared Secrets | 30 | |
| Nramine | XOR Starter | 10 | |
| A5hTurN3R | You either know, XOR you don't | 30 | |
| networksownus | Chinese Remainder Theorem | 40 | |
| somesoo | Computing Public Values | 25 | |
| somesoo | Generators of Groups | 20 | |
| B00177171 | No Way Back Home | 100 | |
| Max12123 | You either know, XOR you don't | 30 | |
| somesoo | Working with Fields | 10 | |
| Unicrafter | No Random, No Bias | 120 | |
| networksownus | Modular Square Root | 35 | |
| nikithapm | Quadratic Residues | 25 | |
| nikithapm | Modular Inverting | 25 | |
| Sylvan | RSA Decryption | 20 | |
| networksownus | Legendre Symbol | 35 |
You are now level Current level