| Date | User | Challenge | Score |
| Joxlong | Digestive | 60 | |
| 0ary | Hex | 5 | |
| 0ary | ASCII | 5 | |
| hobione | Modular Arithmetic 2 | 20 | |
| NieF | Privacy-Enhanced Mail? | 25 | |
| 0ary | Great Snakes | 3 | |
| xavionun | Legendre Symbol | 35 | |
| Sharan07 | Modular Binomials | 80 | |
| Kiwi64bit | Favourite byte | 20 | |
| NieF | Modular Inverting | 25 | |
| NieF | Modular Arithmetic 2 | 20 | |
| takis848 | XOR Properties | 15 | |
| 0ary | Finding Flags | 2 | |
| Kiwi64bit | XOR Properties | 15 | |
| Kad | Diffusion through Permutation | 30 | |
| NieF | Modular Arithmetic 1 | 20 | |
| Sharan07 | Chinese Remainder Theorem | 40 | |
| bbalucs | MD0 | 80 | |
| Hattmakare | ECB Oracle | 60 | |
| gaf | Bytes and Big Integers | 10 | |
| gaf | Base64 | 10 | |
| adi67 | Network Attacks | 5 | |
| gaf | Hex | 5 | |
| gaf | ASCII | 5 | |
| gaf | Network Attacks | 5 | |
| trizzzy | Modular Arithmetic 2 | 20 | |
| ho_ongvyy | Resisting Bruteforce | 10 | |
| whimpity_womp | Favourite byte | 20 | |
| Harya | Moving Problems | 150 | |
| Sharan07 | Modular Square Root | 35 | |
| schoin | Monoprime | 30 | |
| Kad | Confusion through Substitution | 25 | |
| ho_ongvyy | Keyed Permutations | 5 | |
| dkoazwlearning | Too Many Errors | 100 | |
| littleseal26 | Parameter Injection | 60 | |
| asfd98123rejk | Montgomery's Ladder | 40 | |
| magda_almpani | Monoprime | 30 | |
| Sharan07 | Legendre Symbol | 35 | |
| schoin | Factoring | 15 | |
| administrator___ | Greatest Common Divisor | 15 | |
| schoin | RSA Signatures | 25 | |
| 00sedra_y00 | ASCII | 5 | |
| magda_almpani | Factoring | 15 | |
| mattitarkkonen | Finding Flags | 2 | |
| 00sedra_y00 | Great Snakes | 3 | |
| schoin | RSA Decryption | 20 | |
| iranon | ASCII | 5 | |
| schoin | Private Keys | 20 | |
| iranon | Great Snakes | 3 | |
| schoin | Euler's Totient | 20 |
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