| Date | User | Challenge | Score |
| DeathElixir | Base64 | 10 | |
| Sylvan | Modular Square Root | 35 | |
| achso | Great Snakes | 3 | |
| luffy_62045 | Greatest Common Divisor | 15 | |
| achso | Finding Flags | 2 | |
| nurminen | Abelian SIDH | 90 | |
| IKESIRT | Favourite byte | 20 | |
| nurminen | Dual Masters | 90 | |
| francois | WOTS Up 2 | 90 | |
| nurminen | Better than Linear | 85 | |
| montaoo | RSA or HMAC? | 35 | |
| h13n_7u_hvy | Extended GCD | 20 | |
| zyp3 | Favourite byte | 20 | |
| DeathElixir | Hex | 5 | |
| j_wlodarz | Endless Emails | 150 | |
| matibbb232 | The Good, The Pad, The Ugly | 100 | |
| matibbb232 | Pad Thai | 80 | |
| luffy_62045 | You either know, XOR you don't | 30 | |
| gautierfk | Finding Flags | 2 | |
| RomainFr | Finding Flags | 2 | |
| andrehda | Let's Decrypt | 80 | |
| luffy_62045 | Favourite byte | 20 | |
| lingling | Factoring | 15 | |
| gAnngee | Base64 | 10 | |
| rcg3376 | Bean Counter | 60 | |
| nurminen | Meet me in the Claw | 120 | |
| nurminen | Nativity | 60 | |
| luffy_62045 | XOR Properties | 15 | |
| luffy_62045 | XOR Starter | 10 | |
| DeathElixir | ASCII | 5 | |
| nurminen | Bounded Noise | 50 | |
| luffy_62045 | Bytes and Big Integers | 10 | |
| luffy_62045 | Base64 | 10 | |
| this_is_a_trap | Encoding Challenge | 40 | |
| DeathElixir | Great Snakes | 3 | |
| luffy_62045 | Hex | 5 | |
| nurminen | A True Genus | 175 | |
| luffy_62045 | ASCII | 5 | |
| rcg3376 | Symmetry | 50 | |
| luffy_62045 | Network Attacks | 5 | |
| MidoS3d | Vote for Pedro | 150 | |
| luffy_62045 | Great Snakes | 3 | |
| nurminen | LWE Low Bits Message | 20 | |
| Azilebeth | Finding Flags | 2 | |
| ppoly | Everything is Still Big | 100 | |
| nurminen | From Private to Public Key LWE | 25 | |
| DeathElixir | Finding Flags | 2 | |
| matibbb232 | Logon Zero | 80 | |
| jinkun | Adrien's Signs | 80 | |
| nurminen | Composite Isogenies | 60 |
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