| Date | User | Challenge | Score |
| tigertiger_74 | Resisting Bruteforce | 10 | |
| tigertiger_74 | Keyed Permutations | 5 | |
| bbrth41 | Base64 | 10 | |
| tigertiger_74 | Modular Binomials | 80 | |
| kt3001 | Base64 | 10 | |
| jac0 | Round Keys | 20 | |
| Tekq14 | Hex | 5 | |
| bbrth41 | Hex | 5 | |
| Zakron0b | Greatest Common Divisor | 15 | |
| W0lf_19S | Legendre Symbol | 35 | |
| kt3001 | Hex | 5 | |
| Shanidh | Finding Flags | 2 | |
| TheKY | Chinese Remainder Theorem | 40 | |
| tigertiger_74 | Adrien's Signs | 80 | |
| zhacutis1tg | Passwords as Keys | 50 | |
| JackyJuz | Favourite byte | 20 | |
| wcmocha | Bytes and Big Integers | 10 | |
| kt3001 | ASCII | 5 | |
| Neutr0nys | Forbidden Fruit | 150 | |
| tigertiger_74 | Chinese Remainder Theorem | 40 | |
| tigertiger_74 | Modular Square Root | 35 | |
| tigertiger_74 | Legendre Symbol | 35 | |
| tigertiger_74 | Quadratic Residues | 25 | |
| loverock | Favourite byte | 20 | |
| Thu_Huong11 | RSA Backdoor Viability | 175 | |
| Michael9112 | Great Snakes | 3 | |
| bbrth41 | ASCII | 5 | |
| Michael9112 | Finding Flags | 2 | |
| misetius | RSA Decryption | 20 | |
| rmn_bm | Lemur XOR | 40 | |
| wcmocha | Base64 | 10 | |
| jac0 | Structure of AES | 15 | |
| misetius | Private Keys | 20 | |
| rmn_bm | Encoding Challenge | 40 | |
| Thu_Huong11 | Manyprime | 40 | |
| Kie | Fast Primes | 75 | |
| Sumeya_Halkano | You either know, XOR you don't | 30 | |
| wcmocha | Hex | 5 | |
| yt_234 | You either know, XOR you don't | 30 | |
| Sumeya_Halkano | Favourite byte | 20 | |
| yt_234 | Favourite byte | 20 | |
| yt_234 | XOR Properties | 15 | |
| Sumeya_Halkano | XOR Properties | 15 | |
| yt_234 | XOR Starter | 10 | |
| Sumeya_Halkano | XOR Starter | 10 | |
| yt_234 | Bytes and Big Integers | 10 | |
| yt_234 | Base64 | 10 | |
| Sumeya_Halkano | Bytes and Big Integers | 10 | |
| yt_234 | Hex | 5 | |
| jac0 | Resisting Bruteforce | 10 |
You are now level Current level