| Date | User | Challenge | Score |
| LingLing_at_CH | Hex | 5 | |
| LingLing_at_CH | ASCII | 5 | |
| Sovann7 | XOR Starter | 10 | |
| LingLing_at_CH | Network Attacks | 5 | |
| luwofi | Gram Schmidt | 30 | |
| bluesky2113 | Symmetry | 50 | |
| DraSoGo | XOR Starter | 10 | |
| LingLing_at_CH | Great Snakes | 3 | |
| ethereal_666 | Modular Arithmetic 1 | 20 | |
| LingLing_at_CH | Finding Flags | 2 | |
| ethereal_666 | Extended GCD | 20 | |
| DraSoGo | Encoding Challenge | 40 | |
| IMU | Encoding Challenge | 40 | |
| priyanshoon | You either know, XOR you don't | 30 | |
| ethereal_666 | Greatest Common Divisor | 15 | |
| Sovann7 | Bytes and Big Integers | 10 | |
| wiz1106 | What's a Lattice? | 40 | |
| ZeusP | ASCII | 5 | |
| origabai | Transparency | 50 | |
| cepreusa | A True Genus | 175 | |
| ZeusP | Great Snakes | 3 | |
| ndgsghdj | Composite Isogenies | 60 | |
| origabai | SSH Keys | 35 | |
| origabai | CERTainly not | 30 | |
| ngawipride67 | Resisting Bruteforce | 10 | |
| ZeusP | Finding Flags | 2 | |
| origabai | Privacy-Enhanced Mail? | 25 | |
| luwofi | Size and Basis | 15 | |
| NguyenNK | Missing Modulus | 80 | |
| ngawipride67 | Keyed Permutations | 5 | |
| luwofi | Vectors | 10 | |
| wiz1106 | Gram Schmidt | 30 | |
| bluesky2113 | Flipping Cookie | 60 | |
| DraSoGo | Bytes and Big Integers | 10 | |
| origabai | Lemur XOR | 40 | |
| cepreusa | Hamiltonicity 2 | 175 | |
| cepreusa | Hamiltonicity 2 (CryptoHack) | 0 | |
| kuclux | Passwords as Keys | 50 | |
| ndgsghdj | Three Isogenies | 35 | |
| kuclux | Modes of Operation Starter | 15 | |
| l3th4l | Parameter Injection | 60 | |
| DraSoGo | Base64 | 10 | |
| Muthaiah | Dancing Queen | 120 | |
| priyanshoon | Favourite byte | 20 | |
| origabai | Encoding Challenge | 40 | |
| priyanshoon | XOR Properties | 15 | |
| nitesh | Base64 | 10 | |
| DraSoGo | Hex | 5 | |
| s1340162_MAEDA | Extended GCD | 20 | |
| DraSoGo | ASCII | 5 |
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