| Date | User | Challenge | Score |
| mikolaj_bejnar | Infinite Descent | 50 | |
| yanis_deriche | You either know, XOR you don't | 30 | |
| Angel911 | Extended GCD | 20 | |
| piotrjacak | Marin's Secrets | 50 | |
| calvernaz | Export-grade | 100 | |
| hitmost | Finding Flags | 2 | |
| drzejus | Secure Protocols | 5 | |
| Don_Rollo1234 | Modular Arithmetic 2 | 20 | |
| mikolaj_bejnar | Everything is Still Big | 100 | |
| mikolaj_bejnar | Crossed Wires | 100 | |
| mikolaj_bejnar | Modulus Inutilis | 50 | |
| mikolaj_bejnar | Salty | 20 | |
| leuge | Modular Inverting | 25 | |
| piotrjacak | Infinite Descent | 50 | |
| mikolaj_bejnar | Everything is Big | 70 | |
| goultarde | Modular Inverting | 25 | |
| mikolaj_bejnar | Manyprime | 40 | |
| Angel911 | Greatest Common Divisor | 15 | |
| yanis_deriche | Favourite byte | 20 | |
| akki_ikka | Quadratic Residues | 25 | |
| yanis_deriche | XOR Properties | 15 | |
| goultarde | Modular Arithmetic 2 | 20 | |
| dabrowskaa | Resisting Bruteforce | 10 | |
| NotSkilled | ECB CBC WTF | 55 | |
| dabrowskaa | Keyed Permutations | 5 | |
| adriaaan7 | Script Kiddie | 70 | |
| adriaaan7 | Additive | 70 | |
| adriaaan7 | Static Client | 100 | |
| adriaaan7 | Export-grade | 100 | |
| adriaaan7 | Parameter Injection | 60 | |
| zious | Adrien's Signs | 80 | |
| dabrowskaa | Find the Lattice | 100 | |
| dabrowskaa | Missing Modulus | 80 | |
| abdelhak | Structure of AES | 15 | |
| bouddha | Bit by Bit | 100 | |
| doneyit413 | Infinite Descent | 50 | |
| nikit37 | Bytes and Big Integers | 10 | |
| goultarde | Modular Arithmetic 1 | 20 | |
| dabrowskaa | Backpack Cryptography | 120 | |
| Alarma22 | Great Snakes | 3 | |
| abdelhak | You either know, XOR you don't | 30 | |
| Alarma22 | Finding Flags | 2 | |
| nikit37 | Base64 | 10 | |
| zeroday651 | Working with Fields | 10 | |
| yanis_deriche | XOR Starter | 10 | |
| 4l44_H3x | Extended GCD | 20 | |
| ahmqd | No Leaks | 100 | |
| nikit37 | Hex | 5 | |
| nikit37 | ASCII | 5 | |
| 4l44_H3x | Greatest Common Divisor | 15 |
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