| Date | User | Challenge | Score |
| leopoldofr | Adrien's Signs | 80 | |
| gecko | Base64 | 10 | |
| jaeu1341 | Symmetry | 50 | |
| Sirine | Extended GCD | 20 | |
| gecko | Hex | 5 | |
| MilesTillo | Great Snakes | 3 | |
| gecko | ASCII | 5 | |
| Ridik | XOR Starter | 10 | |
| gecko | Great Snakes | 3 | |
| jaeu1341 | Lemur XOR | 40 | |
| vic1208 | Jack's Birthday Hash | 20 | |
| gecko | Finding Flags | 2 | |
| cryptohack720 | Chinese Remainder Theorem | 40 | |
| nahsor | Finding Flags | 2 | |
| jaeu1341 | You either know, XOR you don't | 30 | |
| p1n0 | ASCII | 5 | |
| pw4ch7re3 | Broken RSA | 100 | |
| cryptohack720 | Modular Square Root | 35 | |
| TheGoose55 | Confusion through Substitution | 25 | |
| jaeu1341 | Favourite byte | 20 | |
| p1n0 | Great Snakes | 3 | |
| p1n0 | Finding Flags | 2 | |
| TheGoose55 | Round Keys | 20 | |
| hasuke | Curveball | 100 | |
| 0xwolgrus | Network Attacks | 5 | |
| Syan | You either know, XOR you don't | 30 | |
| Novy | You either know, XOR you don't | 30 | |
| Taleh | Lemur XOR | 40 | |
| TheGoose55 | Structure of AES | 15 | |
| Syan | Favourite byte | 20 | |
| Novy | Favourite byte | 20 | |
| Syan | XOR Properties | 15 | |
| Novy | XOR Properties | 15 | |
| Taleh | XOR Properties | 15 | |
| Taleh | Favourite byte | 20 | |
| Taleh | You either know, XOR you don't | 30 | |
| Tulgaa | André Encoding | 80 | |
| h1n4t4 | Confusion through Substitution | 25 | |
| chromeuser | XOR Properties | 15 | |
| TheGoose55 | Resisting Bruteforce | 10 | |
| sarikamisra | XOR Starter | 10 | |
| Taleh | XOR Starter | 10 | |
| Tulgaa | What's My Kernel | 70 | |
| Syan | XOR Starter | 10 | |
| Novy | XOR Starter | 10 | |
| Tulgaa | CSIDH Key Exchange | 90 | |
| Taleh | Bytes and Big Integers | 10 | |
| Novy | Bytes and Big Integers | 10 | |
| Taleh | Base64 | 10 | |
| rizzz | Finding Flags | 2 |
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