| Date | User | Challenge | Score |
| sheina906 | The Matrix | 75 | |
| thibaultml | Greatest Common Divisor | 15 | |
| flower2 | Keyed Permutations | 5 | |
| ck0d | Jack's Birthday Confusion | 30 | |
| w1ntermut3 | Finding Flags | 2 | |
| flower2 | Broken RSA | 100 | |
| acidlog | Monoprime | 30 | |
| TonyNo | Chinese Remainder Theorem | 40 | |
| NetinhoYNT | Great Snakes | 3 | |
| NetinhoYNT | Finding Flags | 2 | |
| mishustick | Modular Arithmetic 1 | 20 | |
| x092646 | Structure of AES | 15 | |
| arsh0 | Greatest Common Divisor | 15 | |
| thibaultml | You either know, XOR you don't | 30 | |
| maro65 | ASCII | 5 | |
| camurg | XOR Starter | 10 | |
| ck0d | Jack's Birthday Hash | 20 | |
| maro65 | Great Snakes | 3 | |
| TonyNo | Modular Square Root | 35 | |
| maro65 | Finding Flags | 2 | |
| x092646 | Resisting Bruteforce | 10 | |
| mishustick | Extended GCD | 20 | |
| thibaultml | Favourite byte | 20 | |
| camurg | Bytes and Big Integers | 10 | |
| x092646 | Keyed Permutations | 5 | |
| Chervonw | XOR Properties | 15 | |
| blashgdow | ZKP Introduction | 5 | |
| AthenaEryma | Bytes and Big Integers | 10 | |
| flower2 | Infinite Descent | 50 | |
| x092646 | Modular Binomials | 80 | |
| AthenaEryma | Base64 | 10 | |
| sefimiu | Symmetry | 50 | |
| camurg | Base64 | 10 | |
| AthenaEryma | Hex | 5 | |
| AthenaEryma | ASCII | 5 | |
| AthenaEryma | Network Attacks | 5 | |
| 7MD | Base64 | 10 | |
| sheina906 | Static Client 2 | 120 | |
| camurg | Hex | 5 | |
| AthenaEryma | Great Snakes | 3 | |
| 7MD | Hex | 5 | |
| acidlog | Inferius Prime | 30 | |
| TonyNo | Legendre Symbol | 35 | |
| rahmec | PriMeD5 | 100 | |
| sefimiu | Flipping Cookie | 60 | |
| manubn | Modular Square Root | 35 | |
| 7MD | ASCII | 5 | |
| camurg | ASCII | 5 | |
| doublejue | Moving Problems | 150 | |
| doublejue | ProSign 3 | 100 |
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