| Date | User | Challenge | Score |
| Babit | Modular Inverting | 25 | |
| spitfire151 | ASCII | 5 | |
| Cutulache | Extended GCD | 20 | |
| Babit | Modular Arithmetic 2 | 20 | |
| snowraven | Point Negation | 10 | |
| spitfire151 | Great Snakes | 3 | |
| Babit | Modular Arithmetic 1 | 20 | |
| Manul | Modular Binomials | 80 | |
| nadinadinad | Quadratic Residues | 25 | |
| Babit | Extended GCD | 20 | |
| sheerwood | ZKP Introduction | 5 | |
| tmthbghd | XOR Starter | 10 | |
| spitfire151 | Finding Flags | 2 | |
| WertherSamsa | ECB CBC WTF | 55 | |
| CF | Favourite byte | 20 | |
| tmthbghd | Bytes and Big Integers | 10 | |
| Manul | Adrien's Signs | 80 | |
| Cutulache | Greatest Common Divisor | 15 | |
| Manul | Chinese Remainder Theorem | 40 | |
| Babit | Greatest Common Divisor | 15 | |
| Manul | Modular Square Root | 35 | |
| chuchuu | ASCII | 5 | |
| junkfile | Background Reading | 5 | |
| Manul | Legendre Symbol | 35 | |
| Babit | You either know, XOR you don't | 30 | |
| Htet | No Difference | 175 | |
| Babit | Favourite byte | 20 | |
| walid_z1 | Montgomery's Ladder | 40 | |
| Manul | Quadratic Residues | 25 | |
| Babit | XOR Properties | 15 | |
| chuchuu | Great Snakes | 3 | |
| ShahdElrawy | Flipping Cookie | 60 | |
| aress | Deriving Symmetric Keys | 40 | |
| thaggs1066 | Prime and Prejudice | 200 | |
| Manul | Modular Inverting | 25 | |
| aress | Computing Shared Secrets | 30 | |
| chuchuu | Finding Flags | 2 | |
| PotatoCutlet | Bytes and Big Integers | 10 | |
| vkenji | Base64 | 10 | |
| Htet | MD0 | 80 | |
| vkenji | Hex | 5 | |
| aress | Computing Public Values | 25 | |
| aress | Generators of Groups | 20 | |
| vkenji | ASCII | 5 | |
| vkenji | Great Snakes | 3 | |
| vkenji | Finding Flags | 2 | |
| cavazinf | No Difference | 175 | |
| pranathi_hem | ASCII | 5 | |
| cpicozzi | Everything is Big | 70 | |
| cavazinf | Twin Keys | 100 |
You are now level Current level