| Date | User | Challenge | Score |
| LABORATOR | Chinese Remainder Theorem | 40 | |
| pokiTS | Prime and Prejudice | 200 | |
| kratta | Modular Square Root | 35 | |
| dvip | Finding Flags | 2 | |
| SeifAhmed | Gaussian Reduction | 50 | |
| SeifAhmed | What's a Lattice? | 40 | |
| SeifAhmed | Gram Schmidt | 30 | |
| SeifAhmed | Size and Basis | 15 | |
| Ianneuh | Favourite byte | 20 | |
| SeifAhmed | Vectors | 10 | |
| CosminB24 | Quadratic Residues | 25 | |
| CosminB24 | Modular Inverting | 25 | |
| LotfiDr | Base64 | 10 | |
| JOJOmomo | XOR Starter | 10 | |
| CosminB24 | Modular Arithmetic 2 | 20 | |
| whiteknight | Transparency | 50 | |
| sigem | Finding Flags | 2 | |
| iceo96 | Extended GCD | 20 | |
| nickgive | Modular Inverting | 25 | |
| nickgive | Modular Arithmetic 2 | 20 | |
| SeifAhmed | Mixed Up | 120 | |
| AhmedELsehrawy | XOR Properties | 15 | |
| nickgive | Modular Arithmetic 1 | 20 | |
| kratta | Legendre Symbol | 35 | |
| nickgive | Extended GCD | 20 | |
| ayazaktas | Great Snakes | 3 | |
| Noah6002 | Confusion through Substitution | 25 | |
| ayazaktas | Finding Flags | 2 | |
| SeifAhmed | PriMeD5 | 100 | |
| nickgive | Greatest Common Divisor | 15 | |
| SeifAhmed | MD0 | 80 | |
| AhmedELsehrawy | Bytes and Big Integers | 10 | |
| galchapman | Lazy CBC | 60 | |
| PAWOS | Elliptic Nodes | 150 | |
| SeifAhmed | Hash Stuffing | 50 | |
| 0xMarta | Great Snakes | 3 | |
| AhmedELsehrawy | Base64 | 10 | |
| SeifAhmed | Collider | 50 | |
| gumbat70 | Decrypting TLS 1.3 | 35 | |
| 0xMarta | Finding Flags | 2 | |
| LotfiDr | Hex | 5 | |
| R00tSeek3r | Legendre Symbol | 35 | |
| Hycznll | Let's Decrypt | 80 | |
| SeifAhmed | Deriving Symmetric Keys | 40 | |
| SeifAhmed | Computing Shared Secrets | 30 | |
| PAWOS | Micro Transmissions | 120 | |
| GeorgeSor | Privacy-Enhanced Mail? | 25 | |
| SeifAhmed | Computing Public Values | 25 | |
| SeifAhmed | Generators of Groups | 20 | |
| whiteknight | SSH Keys | 35 |
You are now level Current level