| Date | User | Challenge | Score |
| johnpork | Bytes and Big Integers | 10 | |
| kinokith1 | Favourite byte | 20 | |
| c0rruptedH3xx | Base64 | 10 | |
| kinokith1 | XOR Properties | 15 | |
| d4pr0 | Sharks on the Wire | 10 | |
| Bitcoin | XOR Starter | 10 | |
| kazak4078 | Resisting Bruteforce | 10 | |
| johnpork | Base64 | 10 | |
| kazak4078 | Keyed Permutations | 5 | |
| bhanuPathak | Working with Fields | 10 | |
| kazak4078 | Modular Binomials | 80 | |
| bektish | Passwords as Keys | 50 | |
| Bud90 | Great Snakes | 3 | |
| Bud90 | Finding Flags | 2 | |
| kazak4078 | Modular Square Root | 35 | |
| johnpork | Hex | 5 | |
| oscarzerotw | Modular Square Root | 35 | |
| c0rruptedH3xx | Hex | 5 | |
| crytobro | Extended GCD | 20 | |
| Bitcoin | Bytes and Big Integers | 10 | |
| tillsol | ASCII | 5 | |
| kinokith1 | XOR Starter | 10 | |
| tillsol | Great Snakes | 3 | |
| tillsol | Finding Flags | 2 | |
| kinokith1 | Bytes and Big Integers | 10 | |
| Arriccio | Flipping Cookie | 60 | |
| johnpork | ASCII | 5 | |
| bektish | Modes of Operation Starter | 15 | |
| c0rruptedH3xx | ASCII | 5 | |
| Ar3A_0 | Base64 | 10 | |
| User0069 | Everything is Big | 70 | |
| johnpork | Great Snakes | 3 | |
| CyberSch0lar | Extended GCD | 20 | |
| Ar3A_0 | Hex | 5 | |
| oscarzerotw | Legendre Symbol | 35 | |
| kazak4078 | Adrien's Signs | 80 | |
| crytobro | XOR Starter | 10 | |
| aristidecod | Bytes and Big Integers | 10 | |
| NotAFurry | XOR Starter | 10 | |
| crytobro | Bytes and Big Integers | 10 | |
| crytobro | Base64 | 10 | |
| crytobro | Hex | 5 | |
| Ar3A_0 | ASCII | 5 | |
| crytobro | ASCII | 5 | |
| crytobro | Great Snakes | 3 | |
| Ar3A_0 | Great Snakes | 3 | |
| crytobro | Finding Flags | 2 | |
| dilya | Resisting Bruteforce | 10 | |
| Ar3A_0 | Finding Flags | 2 | |
| DQH | The Good, The Pad, The Ugly | 100 |
You are now level Current level