| Date | User | Challenge | Score |
| lfvbdghkjfgm | CERTainly not | 30 | |
| milaiscute | Lo-Hi Card Game | 120 | |
| cryptopenguin15 | Megalomaniac 3 | 120 | |
| CorvuS | Encoding Challenge | 40 | |
| nate73duck | Great Snakes | 3 | |
| s0ngbird | Symmetry | 50 | |
| ogura_pi | Quadratic Residues | 25 | |
| nate73duck | Finding Flags | 2 | |
| s0ngbird | Flipping Cookie | 60 | |
| binsec01 | Base64 | 10 | |
| binsec01 | Hex | 5 | |
| binsec01 | ASCII | 5 | |
| binsec01 | Great Snakes | 3 | |
| binsec01 | Finding Flags | 2 | |
| lydxn | Twist and shout (ECSC 2023 (Norway)) | 0 | |
| jwon1750 | Encoding Challenge | 40 | |
| ogura_pi | Modular Inverting | 25 | |
| donkey_kong | Public Keys | 15 | |
| Bluewyn | You either know, XOR you don't | 30 | |
| donkey_kong | Modular Exponentiation | 10 | |
| Lutfi_Fauzan | Hex | 5 | |
| Lutfi_Fauzan | ASCII | 5 | |
| Hauntgo | Modular Binomials | 80 | |
| jwon1750 | Bytes and Big Integers | 10 | |
| Lutfi_Fauzan | Great Snakes | 3 | |
| Lutfi_Fauzan | Finding Flags | 2 | |
| jwon1750 | Base64 | 10 | |
| Bluewyn | Favourite byte | 20 | |
| plebware | You either know, XOR you don't | 30 | |
| Hauntgo | Adrien's Signs | 80 | |
| miaolyyy | Favourite byte | 20 | |
| jwon1750 | Hex | 5 | |
| euphoria | Modular Arithmetic 2 | 20 | |
| jwon1750 | ASCII | 5 | |
| Hauntgo | Chinese Remainder Theorem | 40 | |
| Bluewyn | XOR Properties | 15 | |
| Hauntgo | Modular Square Root | 35 | |
| jwon1750 | Network Attacks | 5 | |
| Hauntgo | Legendre Symbol | 35 | |
| AristidesCantero | XOR Properties | 15 | |
| quantum_cracking | Structure of AES | 15 | |
| Hauntgo | Quadratic Residues | 25 | |
| n0thing | Finding Flags | 2 | |
| 0xMard | Hamiltonicity 2 | 175 | |
| 0xMard | Hamiltonicity 2 (CryptoHack) | 0 | |
| khhhkhkh | XOR Properties | 15 | |
| ieuns | XOR Starter | 10 | |
| quantum_cracking | Resisting Bruteforce | 10 | |
| plebware | Favourite byte | 20 | |
| ogura_pi | Modular Arithmetic 2 | 20 |
You are now level Current level