| Date | User | Challenge | Score |
| odracir | XOR Starter | 10 | |
| odracir | Bytes and Big Integers | 10 | |
| Kosin | Modular Arithmetic 1 | 20 | |
| seqo | ASCII | 5 | |
| myrkota | Resisting Bruteforce | 10 | |
| Kosin | Extended GCD | 20 | |
| irritable_hacker | Pad Thai | 80 | |
| bro31813 | Passwords as Keys | 50 | |
| Kosin | Greatest Common Divisor | 15 | |
| Sharan07 | Manyprime | 40 | |
| odracir | Base64 | 10 | |
| seqo | Network Attacks | 5 | |
| sebastianmonroy | Modular Binomials | 80 | |
| sebastianmonroy | Successive Powers | 60 | |
| sebastianmonroy | Chinese Remainder Theorem | 40 | |
| sebastianmonroy | Modular Square Root | 35 | |
| Kiwi64bit | Modular Inverting | 25 | |
| sebastianmonroy | Legendre Symbol | 35 | |
| Relearning_again | Encoding Challenge | 40 | |
| Inventionist1 | Transparency | 50 | |
| sebastianmonroy | Quadratic Residues | 25 | |
| odracir | Hex | 5 | |
| Spire | Lack of Entropy (Firebird Internal CTF) | 0 | |
| hadassah | Greatest Common Divisor | 15 | |
| odracir | ASCII | 5 | |
| Spire | Decrypting TLS 1.2 | 30 | |
| odracir | Great Snakes | 3 | |
| bro31813 | Modes of Operation Starter | 15 | |
| Kiwi64bit | Modular Arithmetic 2 | 20 | |
| seqo | Great Snakes | 3 | |
| 0xN1GHTBYTE | XOR Starter | 10 | |
| Spire | RRSSAA (ECSC 2023 (Norway)) | 0 | |
| Spire | Unimplemented (TETCTF) | 0 | |
| rapt00r | Gotta Go Fast | 40 | |
| seqo | Finding Flags | 2 | |
| 0xN1GHTBYTE | Bytes and Big Integers | 10 | |
| myrkota | Keyed Permutations | 5 | |
| Hattmakare | Efficient Exchange | 50 | |
| spartan8806 | Toshi's Treasure | 150 | |
| Inventionist1 | SSH Keys | 35 | |
| Inventionist1 | CERTainly not | 30 | |
| Inventionist1 | Privacy-Enhanced Mail? | 25 | |
| sff | Computing Shared Secrets | 30 | |
| richmoneybank479 | Chinese Remainder Theorem | 40 | |
| rapt00r | Encoding Challenge | 40 | |
| zypher_02 | ASCII | 5 | |
| Fabiancello | Finding Flags | 2 | |
| sff | Computing Public Values | 25 | |
| Mai47 | Resisting Bruteforce | 10 | |
| Inventionist1 | Lemur XOR | 40 |
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