| Date | User | Challenge | Score |
| bdr | ASCII | 5 | |
| ro547 | Modular Arithmetic 1 | 20 | |
| masashi | Sharks on the Wire | 10 | |
| iloosip | Legendre Symbol | 35 | |
| bdr | Great Snakes | 3 | |
| AsselM | Bytes and Big Integers | 10 | |
| AsselM | Base64 | 10 | |
| AsselM | Hex | 5 | |
| bdr | Finding Flags | 2 | |
| mitch_gab | Base64 | 10 | |
| AsselM | ASCII | 5 | |
| AsselM | Network Attacks | 5 | |
| CompleteFool | Legendre Symbol | 35 | |
| AsselM | Great Snakes | 3 | |
| chickeninabox | Base64 | 10 | |
| MichaelWheel | Bytes and Big Integers | 10 | |
| KRyptonZ | Broken RSA | 100 | |
| chickeninabox | Hex | 5 | |
| RahulCpH | Lemur XOR | 40 | |
| chickeninabox | ASCII | 5 | |
| hautot211 | Bounded Noise | 50 | |
| Bbbb | Bytes and Big Integers | 10 | |
| chickeninabox | Great Snakes | 3 | |
| chickeninabox | Finding Flags | 2 | |
| Diego120 | Base64 | 10 | |
| Bbbb | Base64 | 10 | |
| Erenuzndg | Bytes and Big Integers | 10 | |
| bushik | Greatest Common Divisor | 15 | |
| Keremet | Successive Powers | 60 | |
| MichaelWheel | Base64 | 10 | |
| DV13 | Network Attacks | 5 | |
| redsti | The Good, The Pad, The Ugly | 100 | |
| maxxxx | XOR Starter | 10 | |
| ZHAINAA | Resisting Bruteforce | 10 | |
| ZHAINAA | Keyed Permutations | 5 | |
| RahulCpH | You either know, XOR you don't | 30 | |
| Bbbb | Hex | 5 | |
| AliosPBC | Bytes and Big Integers | 10 | |
| MichaelWheel | Hex | 5 | |
| RahulCpH | Favourite byte | 20 | |
| RahulCpH | XOR Properties | 15 | |
| Bbbb | ASCII | 5 | |
| MichaelWheel | ASCII | 5 | |
| Bbbb | Great Snakes | 3 | |
| AsselM | Finding Flags | 2 | |
| MichaelWheel | Great Snakes | 3 | |
| DV13 | Great Snakes | 3 | |
| Pandagirl24054 | Great Snakes | 3 | |
| Keremet | Chinese Remainder Theorem | 40 | |
| Rudee | Hex | 5 |
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