| Date | User | Challenge | Score |
| Amro_Hussein | Export-grade | 100 | |
| nevermind464 | ASCII | 5 | |
| PeakyCyber | Quadratic Residues | 25 | |
| SuikaPredator | Flipping Cookie | 60 | |
| gruenerheli | Working with Fields | 10 | |
| miruze | Extended GCD | 20 | |
| sakib65 | Greatest Common Divisor | 15 | |
| nevermind464 | Great Snakes | 3 | |
| nevermind464 | Finding Flags | 2 | |
| lapa | Public Keys | 15 | |
| AboEl5yr | Modular Binomials | 80 | |
| lapa | Modular Exponentiation | 10 | |
| PeakyCyber | Modular Inverting | 25 | |
| BasharAhmed | Export-grade | 100 | |
| SuikaPredator | ECB Oracle | 60 | |
| PotatoCutlet | XOR Starter | 10 | |
| PeakyCyber | Modular Arithmetic 2 | 20 | |
| cyk0sure | Let's Prove It Again | 175 | |
| gofmank | Bean Counter | 60 | |
| AboEl5yr | Adrien's Signs | 80 | |
| giusber2005 | Point Negation | 10 | |
| kurumi_11 | Parameter Injection | 60 | |
| Johncata45674 | Base64 | 10 | |
| abdullahshamhan | Favourite byte | 20 | |
| dhnm | XOR Starter | 10 | |
| giusber2005 | Background Reading | 5 | |
| abdullahshamhan | XOR Properties | 15 | |
| Johncata45674 | Hex | 5 | |
| abdullahshamhan | XOR Starter | 10 | |
| abdullahshamhan | Bytes and Big Integers | 10 | |
| yeshu30 | Favourite byte | 20 | |
| AboEl5yr | Chinese Remainder Theorem | 40 | |
| abdullahshamhan | Base64 | 10 | |
| Docar21 | Great Snakes | 3 | |
| abdullahshamhan | ASCII | 5 | |
| yeshu30 | XOR Properties | 15 | |
| AmirEfendi | Quadratic Residues | 25 | |
| Docar21 | Finding Flags | 2 | |
| cyk0sure | Mister Saplins The Prover | 125 | |
| Ali2911 | ASCII | 5 | |
| hata | Everything is Big | 70 | |
| MrMad | Salty | 20 | |
| jscornelius | CTRIME | 70 | |
| hata | Modulus Inutilis | 50 | |
| Ali2911 | Great Snakes | 3 | |
| hata | Salty | 20 | |
| Amro_Hussein | Parameter Injection | 60 | |
| AmirEfendi | Modular Inverting | 25 | |
| Ali2911 | Finding Flags | 2 | |
| yaki3355 | Base64 | 10 |
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