| Date | User | Challenge | Score |
| Urgentmoney | Quadratic Residues | 25 | |
| GHL | Everything is Big | 70 | |
| anon2k26 | Network Attacks | 5 | |
| Timeweaver | Greatest Common Divisor | 15 | |
| SSKMF | Passwords as Keys | 50 | |
| maksushka | You either know, XOR you don't | 30 | |
| aswinramesan | Base64 | 10 | |
| Vienna | Greatest Common Divisor | 15 | |
| bschweitz | Greatest Common Divisor | 15 | |
| chucklouie | Manyprime | 40 | |
| Dessert | Curveball | 100 | |
| Urgentmoney | Modular Inverting | 25 | |
| Urgentmoney | Modular Arithmetic 2 | 20 | |
| sixsquareAI | Oracular Spectacular | 150 | |
| GHL | Square Eyes | 35 | |
| anon2k26 | Great Snakes | 3 | |
| mbexy | ASCII | 5 | |
| anon2k26 | Finding Flags | 2 | |
| mbexy | Great Snakes | 3 | |
| Timeweaver | You either know, XOR you don't | 30 | |
| crosamond27 | ASCII | 5 | |
| aswinramesan | Hex | 5 | |
| lucy54 | Let's Decrypt | 80 | |
| Urgentmoney | Extended GCD | 20 | |
| Samigo | Factoring | 15 | |
| chucklouie | Square Eyes | 35 | |
| aswinramesan | ASCII | 5 | |
| vitality_suicide | Extended GCD | 20 | |
| miiyen | Diffusion through Permutation | 30 | |
| mbexy | Finding Flags | 2 | |
| bschweitz | You either know, XOR you don't | 30 | |
| svenny | Resisting Bruteforce | 10 | |
| aswinramesan | Great Snakes | 3 | |
| crosamond27 | Great Snakes | 3 | |
| svenny | Keyed Permutations | 5 | |
| DhamoZx | Round Keys | 20 | |
| miiyen | Confusion through Substitution | 25 | |
| chucklouie | Monoprime | 30 | |
| cpyypc | Modular Inverting | 25 | |
| Urgentmoney | Greatest Common Divisor | 15 | |
| crosamond27 | Finding Flags | 2 | |
| cpyypc | Modular Arithmetic 2 | 20 | |
| Samigo | RSA Signatures | 25 | |
| cpyypc | Modular Arithmetic 1 | 20 | |
| cpyypc | Extended GCD | 20 | |
| ArdorBlossom | RSA Signatures | 25 | |
| udhaya | Network Attacks | 5 | |
| SSKMF | Modes of Operation Starter | 15 | |
| cpyypc | Greatest Common Divisor | 15 | |
| aswinramesan | Finding Flags | 2 |
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