| Date | User | Challenge | Score |
| AntoCiss | Resisting Bruteforce | 10 | |
| emygaleas | ASCII | 5 | |
| AntoCiss | Keyed Permutations | 5 | |
| Jossu | Extended GCD | 20 | |
| emygaleas | Great Snakes | 3 | |
| AlanLogSor | Modular Arithmetic 2 | 20 | |
| AlanLogSor | Modular Arithmetic 1 | 20 | |
| AlanLogSor | Extended GCD | 20 | |
| sas_t3sla | Greatest Common Divisor | 15 | |
| Britany | Bytes and Big Integers | 10 | |
| AlanLogSor | Greatest Common Divisor | 15 | |
| AlanLogSor | Base64 | 10 | |
| Jossu | Greatest Common Divisor | 15 | |
| nao_sei | Quadratic Residues | 25 | |
| AlanLogSor | Hex | 5 | |
| AlanLogSor | ASCII | 5 | |
| AlanLogSor | Great Snakes | 3 | |
| Rg19 | You either know, XOR you don't | 30 | |
| BryanAngulo1022 | Adrien's Signs | 80 | |
| twistedwheel | Modular Binomials | 80 | |
| AlanLogSor | Finding Flags | 2 | |
| sas_t3sla | You either know, XOR you don't | 30 | |
| george2323 | Chinese Remainder Theorem | 40 | |
| george2323 | Modular Square Root | 35 | |
| george2323 | Legendre Symbol | 35 | |
| AlxGonin | Transparency | 50 | |
| george2323 | Quadratic Residues | 25 | |
| george2323 | Modular Inverting | 25 | |
| george2323 | Modular Arithmetic 2 | 20 | |
| george2323 | Modular Arithmetic 1 | 20 | |
| george2323 | Extended GCD | 20 | |
| zsnafu | Structure of AES | 15 | |
| Rg19 | Favourite byte | 20 | |
| george2323 | Greatest Common Divisor | 15 | |
| no4h | Modular Inverting | 25 | |
| BrainoFernands | Finding Flags | 2 | |
| george2323 | You either know, XOR you don't | 30 | |
| george2323 | Favourite byte | 20 | |
| george2323 | XOR Properties | 15 | |
| george2323 | XOR Starter | 10 | |
| emygaleas | Finding Flags | 2 | |
| no4h | Lemur XOR | 40 | |
| sas_t3sla | Favourite byte | 20 | |
| Britany | Base64 | 10 | |
| BryanAngulo1022 | You either know, XOR you don't | 30 | |
| Rg19 | XOR Properties | 15 | |
| zsnafu | Resisting Bruteforce | 10 | |
| Britany | Hex | 5 | |
| zsnafu | Keyed Permutations | 5 | |
| jesster | XOR Properties | 15 |
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