| Date | User | Challenge | Score |
| Sk44kov | Finding Flags | 2 | |
| Makawett | Deriving Symmetric Keys | 40 | |
| tkamegawa | You either know, XOR you don't | 30 | |
| ndespresso | Factoring | 15 | |
| h4fun0x | Encoding Challenge | 40 | |
| LucasGld | Hex | 5 | |
| dzgnhjmfxh | ASCII | 5 | |
| LucasGld | ASCII | 5 | |
| fl0odyyy | Greatest Common Divisor | 15 | |
| tkamegawa | Favourite byte | 20 | |
| Makawett | Computing Shared Secrets | 30 | |
| Makawett | Computing Public Values | 25 | |
| tkamegawa | XOR Properties | 15 | |
| LucasGld | Great Snakes | 3 | |
| LefterisZach | Favourite byte | 20 | |
| LucasGld | Finding Flags | 2 | |
| tkamegawa | XOR Starter | 10 | |
| duckpancakes | Collider | 50 | |
| user1300 | Public Keys | 15 | |
| sangi47 | Favourite byte | 20 | |
| user1300 | Modular Exponentiation | 10 | |
| cryptokeep | Encoding Challenge | 40 | |
| LefterisZach | XOR Properties | 15 | |
| sans1441 | The Matrix | 75 | |
| ryu_20 | ASCII | 5 | |
| Lulda | Adrien's Signs | 80 | |
| tkamegawa | Bytes and Big Integers | 10 | |
| keruen | Round Keys | 20 | |
| LefterisZach | XOR Starter | 10 | |
| bornTOhack | Greatest Common Divisor | 15 | |
| keruen | Structure of AES | 15 | |
| blaze_maze123 | Modular Arithmetic 1 | 20 | |
| Makawett | Generators of Groups | 20 | |
| denzel575 | Extended GCD | 20 | |
| Velen | You either know, XOR you don't | 30 | |
| tkamegawa | Base64 | 10 | |
| denzel575 | Greatest Common Divisor | 15 | |
| ndespresso | RSA Signatures | 25 | |
| 0xluffy | You either know, XOR you don't | 30 | |
| tkamegawa | Hex | 5 | |
| sangi47 | XOR Properties | 15 | |
| keruen | Resisting Bruteforce | 10 | |
| LefterisZach | Bytes and Big Integers | 10 | |
| Valcia | Diffusion through Permutation | 30 | |
| tkamegawa | ASCII | 5 | |
| denzel575 | You either know, XOR you don't | 30 | |
| keruen | Keyed Permutations | 5 | |
| duckpancakes | Jack's Birthday Confusion | 30 | |
| tkamegawa | Great Snakes | 3 | |
| tkamegawa | Finding Flags | 2 |
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