| Date | User | Challenge | Score |
| Theodo | LWE Intro | 10 | |
| Naix | Bytes and Big Integers | 10 | |
| 25520158 | Null or Never | 100 | |
| Theodo | LWE Background | 5 | |
| bl4nkyy | Bytes and Big Integers | 10 | |
| NuevaIDX | XOR Starter | 10 | |
| Naix | Base64 | 10 | |
| hadesnhk | Extended GCD | 20 | |
| DoitouKatsuki | XOR Starter | 10 | |
| NuevaIDX | Bytes and Big Integers | 10 | |
| pc417 | Generators of Groups | 20 | |
| Naix | Hex | 5 | |
| Naix | ASCII | 5 | |
| Naix | Great Snakes | 3 | |
| 25520158 | Bespoke Padding | 100 | |
| NuevaIDX | Base64 | 10 | |
| DoitouKatsuki | Network Attacks | 5 | |
| qthang | Elliptic Nodes | 150 | |
| hadesnhk | Greatest Common Divisor | 15 | |
| Naix | Finding Flags | 2 | |
| NuevaIDX | Hex | 5 | |
| NuevaIDX | ASCII | 5 | |
| pc417 | Working with Fields | 10 | |
| kidboymon | ASCII | 5 | |
| NuevaIDX | Great Snakes | 3 | |
| Tactical_Nerd | Resisting Bruteforce | 10 | |
| NuevaIDX | Finding Flags | 2 | |
| astolica | Hex | 5 | |
| Skinny | Greatest Common Divisor | 15 | |
| kidboymon | Great Snakes | 3 | |
| kidboymon | Finding Flags | 2 | |
| 169977 | Hex | 5 | |
| astolica | ASCII | 5 | |
| 169977 | ASCII | 5 | |
| c0mpos3r99 | Modular Arithmetic 1 | 20 | |
| 169977 | Great Snakes | 3 | |
| Tactical_Nerd | Keyed Permutations | 5 | |
| 169977 | Finding Flags | 2 | |
| hadesnhk | You either know, XOR you don't | 30 | |
| Thu_Huong11 | Bringing It All Together | 50 | |
| astolica | Great Snakes | 3 | |
| 25520158 | Paper Plane | 120 | |
| astolica | Finding Flags | 2 | |
| c0mpos3r99 | Extended GCD | 20 | |
| c0mpos3r99 | Greatest Common Divisor | 15 | |
| Thu_Huong11 | Diffusion through Permutation | 30 | |
| hadesnhk | Favourite byte | 20 | |
| Arix | XOR Starter | 10 | |
| Ardasy | Base64 | 10 | |
| Thu_Huong11 | Confusion through Substitution | 25 |
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