| Date | User | Challenge | Score |
| tig3rpuppet | Montgomery's Ladder | 40 | |
| guyu | Legendre Symbol | 35 | |
| yasmine33 | XOR Properties | 15 | |
| vert3x | PriMeD5 | 100 | |
| YutoIn | Monoprime | 30 | |
| meiiion | CTRIME | 70 | |
| kacpert25 | The Good, The Pad, The Ugly | 100 | |
| bemartian | CERTainly not | 30 | |
| Diagendevil | Greatest Common Divisor | 15 | |
| KoopaTroopa64 | Let's Decrypt Again | 175 | |
| Mejkl | Script Kiddie | 70 | |
| kacpert25 | Pad Thai | 80 | |
| Zikung | Quadratic Residues | 25 | |
| frankn | Symmetry | 50 | |
| Diagendevil | You either know, XOR you don't | 30 | |
| nitanshuB001771 | You either know, XOR you don't | 30 | |
| piotrjacak | ECB Oracle | 60 | |
| YutoIn | Factoring | 15 | |
| Diagendevil | Favourite byte | 20 | |
| Diagendevil | XOR Properties | 15 | |
| nitanshuB001771 | Encoding Challenge | 40 | |
| Saltensity | Working with Fields | 10 | |
| Diagendevil | XOR Starter | 10 | |
| Piotr271 | Signing Server | 60 | |
| Saltensity | Modulus Inutilis | 50 | |
| Diagendevil | Bytes and Big Integers | 10 | |
| shadowguy | Find the Lattice | 100 | |
| vert3x | Jack's Birthday Confusion | 30 | |
| bemartian | Privacy-Enhanced Mail? | 25 | |
| Diagendevil | Base64 | 10 | |
| Staregai | Null or Never | 100 | |
| Staregai | Bespoke Padding | 100 | |
| zeroday774 | RSA Decryption | 20 | |
| Staregai | RSA Backdoor Viability | 175 | |
| mkrajevsky | Export-grade | 100 | |
| Staregai | Ron was Wrong, Whit is Right | 90 | |
| Staregai | Fast Primes | 75 | |
| Staregai | Marin's Secrets | 50 | |
| Staregai | Infinite Descent | 50 | |
| Staregai | Endless Emails | 150 | |
| Saltensity | Salty | 20 | |
| youngCrypto | Digestive | 60 | |
| Staregai | Everything is Still Big | 100 | |
| Diagendevil | Hex | 5 | |
| youngCrypto | Edwards Goes Degenerate | 100 | |
| Staregai | Manyprime | 40 | |
| farhan_mugdho_ | Bytes and Big Integers | 10 | |
| Staregai | Crossed Wires | 100 | |
| Saltensity | Manyprime | 40 | |
| youngCrypto | No Random, No Bias | 120 |
You are now level Current level