| Date | User | Challenge | Score |
| halliana | RSA or HMAC? | 35 | |
| halliana | Moving Problems | 150 | |
| halliana | Digestive | 60 | |
| Zkq | Favourite byte | 20 | |
| Bluewyn | Modular Inverting | 25 | |
| crim_x64 | Hex | 5 | |
| Bluewyn | Modular Arithmetic 2 | 20 | |
| LSD00 | Base64 | 10 | |
| Sugr33va | XOR Properties | 15 | |
| LSD00 | Hex | 5 | |
| crim_x64 | ASCII | 5 | |
| LSD00 | ASCII | 5 | |
| LSD00 | Great Snakes | 3 | |
| halliana | Bringing It All Together | 50 | |
| LSD00 | Finding Flags | 2 | |
| crim_x64 | Network Attacks | 5 | |
| acmo0 | Edwards Goes Degenerate | 100 | |
| Bluewyn | Modular Arithmetic 1 | 20 | |
| Zkq | XOR Properties | 15 | |
| crim_x64 | Great Snakes | 3 | |
| Bluewyn | Extended GCD | 20 | |
| crim_x64 | Finding Flags | 2 | |
| Zkq | XOR Starter | 10 | |
| 0x00696e6964756f | Size and Basis | 15 | |
| KusaYu | Legendre Symbol | 35 | |
| Zkq | Bytes and Big Integers | 10 | |
| Zkq | Base64 | 10 | |
| Zkq | Hex | 5 | |
| xjy888888 | Great Snakes | 3 | |
| Bluewyn | Greatest Common Divisor | 15 | |
| xvikir | Base64 | 10 | |
| Zvarethos007 | Resisting Bruteforce | 10 | |
| xjy888888 | Finding Flags | 2 | |
| Zvarethos007 | Keyed Permutations | 5 | |
| alt255 | Modular Exponentiation | 10 | |
| xvikir | Hex | 5 | |
| 0x00696e6964756f | Vectors | 10 | |
| 1s0m0rph1sm | No Difference | 175 | |
| rangashree | Finding Flags | 2 | |
| Maggiek | Great Snakes | 3 | |
| Anayah_0967 | Finding Flags | 2 | |
| Maggiek | Finding Flags | 2 | |
| 0x5642 | ASCII | 5 | |
| 0x5642 | Great Snakes | 3 | |
| 1s0m0rph1sm | Megalomaniac 3 | 120 | |
| KusaYu | Quadratic Residues | 25 | |
| 1s0m0rph1sm | Megalomaniac 2 | 120 | |
| 1s0m0rph1sm | Megalomaniac 1 | 100 | |
| ZanCTF | RSA Backdoor Viability | 175 | |
| KusaYu | Modular Inverting | 25 |
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