| Date | User | Challenge | Score |
| rallaz | ASCII | 5 | |
| calvernaz | Great Snakes | 3 | |
| rallaz | Great Snakes | 3 | |
| rallaz | Finding Flags | 2 | |
| Pigeonas | Base64 | 10 | |
| calvernaz | Finding Flags | 2 | |
| kubam | Adrien's Signs | 80 | |
| Kacper1111 | Deriving Symmetric Keys | 40 | |
| Fronczyk_Mateusz | The Matrix Reloaded | 100 | |
| arktzi | Favourite byte | 20 | |
| Kacper1111 | Computing Shared Secrets | 30 | |
| Kacper1111 | Computing Public Values | 25 | |
| Scott_0x | XOR Properties | 15 | |
| Kacper1111 | Generators of Groups | 20 | |
| Klubbfiskare | XOR Starter | 10 | |
| juzal | Flipping Cookie | 60 | |
| Kacper1111 | Working with Fields | 10 | |
| xrysh_karelia | Point Negation | 10 | |
| arktzi | XOR Properties | 15 | |
| Klubbfiskare | Bytes and Big Integers | 10 | |
| baoracmavang | Chinese Remainder Theorem | 40 | |
| ax3l_4 | You either know, XOR you don't | 30 | |
| Pigeonas | Hex | 5 | |
| marsmonen | Greatest Common Divisor | 15 | |
| realeyesrealizer | Favourite byte | 20 | |
| kamilkaminski02 | Adrien's Signs | 80 | |
| Pigeonas | ASCII | 5 | |
| arktzi | XOR Starter | 10 | |
| kubam | Successive Powers | 60 | |
| Fronczyk_Mateusz | The Matrix | 75 | |
| fliqz | Resisting Bruteforce | 10 | |
| baoracmavang | Modular Square Root | 35 | |
| Scott_0x | XOR Starter | 10 | |
| Rayene9052 | Working with Fields | 10 | |
| Pigeonas | Great Snakes | 3 | |
| marsmonen | You either know, XOR you don't | 30 | |
| patryk | Quadratic Residues | 25 | |
| Pigeonas | Finding Flags | 2 | |
| fliqz | Keyed Permutations | 5 | |
| marsmonen | Favourite byte | 20 | |
| B00177175_Andre | Stream of Consciousness | 80 | |
| kamilkaminski02 | Successive Powers | 60 | |
| fliqz | You either know, XOR you don't | 30 | |
| kubam | Chinese Remainder Theorem | 40 | |
| IoaMertz | Transparency | 50 | |
| kz0 | Monoprime | 30 | |
| Juh | Factoring | 15 | |
| Juh | RSA Signatures | 25 | |
| marsmonen | XOR Properties | 15 | |
| 2magzz | Finding Flags | 2 |
You are now level Current level