| Date | User | Challenge | Score |
| philiaa_ | Great Snakes | 3 | |
| vladbozhyk23 | Quadratic Residues | 25 | |
| papajek | ASCII | 5 | |
| vladbozhyk23 | Modular Inverting | 25 | |
| Romyna | Missing Modulus | 80 | |
| vladbozhyk23 | Modular Arithmetic 2 | 20 | |
| radoslaw_kasprzk | Bespoke Padding | 100 | |
| peszew | Parameter Injection | 60 | |
| ghostline13 | Finding Flags | 2 | |
| vladbozhyk23 | Modular Arithmetic 1 | 20 | |
| 0M4R | Beatboxer | 150 | |
| cj502 | Manyprime | 40 | |
| vladbozhyk23 | Extended GCD | 20 | |
| cj502 | Export-grade | 100 | |
| Natchuz | Static Client 2 | 120 | |
| Aeneas7 | Decrypting TLS 1.3 | 35 | |
| cj502 | Parameter Injection | 60 | |
| CGermano | Base64 | 10 | |
| vladbozhyk23 | Greatest Common Divisor | 15 | |
| Artur6725 | Decrypting TLS 1.2 | 30 | |
| mkrajevsky | Endless Emails | 150 | |
| Aeneas7 | Decrypting TLS 1.2 | 30 | |
| vladbozhyk23 | You either know, XOR you don't | 30 | |
| vladbozhyk23 | Favourite byte | 20 | |
| Krako | Successive Powers | 60 | |
| vladbozhyk23 | XOR Properties | 15 | |
| sbgmyql | Base64 | 10 | |
| CGermano | Hex | 5 | |
| CGermano | ASCII | 5 | |
| vladbozhyk23 | XOR Starter | 10 | |
| student_david | Adrien's Signs | 80 | |
| kien | Keyed Permutations | 5 | |
| CGermano | Great Snakes | 3 | |
| sbgmyql | Hex | 5 | |
| cj502 | Deriving Symmetric Keys | 40 | |
| vladbozhyk23 | Bytes and Big Integers | 10 | |
| radoslaw_kasprzk | Ron was Wrong, Whit is Right | 90 | |
| CGermano | Finding Flags | 2 | |
| eko_071 | Adrien's Signs | 80 | |
| sbgmyql | ASCII | 5 | |
| student_david | Chinese Remainder Theorem | 40 | |
| cj502 | Computing Shared Secrets | 30 | |
| student_david | Modular Square Root | 35 | |
| sbgmyql | Great Snakes | 3 | |
| vladbozhyk23 | Base64 | 10 | |
| cj502 | Computing Public Values | 25 | |
| radoslaw_kasprzk | Crossed Wires | 100 | |
| vladbozhyk23 | Hex | 5 | |
| sbgmyql | Finding Flags | 2 | |
| peszew | Deriving Symmetric Keys | 40 |
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