| Date | User | Challenge | Score |
| Tuberculosis69 | ASCII | 5 | |
| Finegoose | Hex | 5 | |
| ukfeliz | Great Snakes | 3 | |
| Lef264 | Modular Square Root | 35 | |
| ac_15 | Working with Fields | 10 | |
| rf56 | Hex | 5 | |
| carpathianbadger | Modular Inverting | 25 | |
| periklis | Great Snakes | 3 | |
| clemensGooooo | Too Honest | 50 | |
| dennisdrak_ | Greatest Common Divisor | 15 | |
| Finegoose | ASCII | 5 | |
| rf56 | ASCII | 5 | |
| Panzi | Confusion through Substitution | 25 | |
| carpathianbadger | Modular Arithmetic 2 | 20 | |
| rf56 | Great Snakes | 3 | |
| Kodyvim | Adrien's Signs | 80 | |
| Finegoose | Great Snakes | 3 | |
| periklis | Finding Flags | 2 | |
| Finegoose | Finding Flags | 2 | |
| carpathianbadger | Modular Arithmetic 1 | 20 | |
| nihhajawarembang | Bytes and Big Integers | 10 | |
| lidor | Infinite Descent | 50 | |
| XLR8 | Forbidden Fruit | 150 | |
| rf56 | Finding Flags | 2 | |
| baitfr | Encoding Challenge | 40 | |
| nihhajawarembang | Base64 | 10 | |
| conpa | RSA Signatures | 25 | |
| neinei00 | Oh SNAP | 120 | |
| carpathianbadger | Extended GCD | 20 | |
| francois | Token Appreciation | 5 | |
| DUBI | Modular Inverting | 25 | |
| chananelz | Confusion through Substitution | 25 | |
| DUBI | Modular Arithmetic 2 | 20 | |
| OranS | Private Keys | 20 | |
| baoan | Favourite byte | 20 | |
| DUBI | Modular Arithmetic 1 | 20 | |
| Citizen | Bytes and Big Integers | 10 | |
| DUBI | Extended GCD | 20 | |
| CryptoCracks | Jack's Birthday Confusion | 30 | |
| carpathianbadger | Greatest Common Divisor | 15 | |
| DUBI | Greatest Common Divisor | 15 | |
| PanosT250 | RSA Decryption | 20 | |
| DIMITRA_PERAKI | Great Snakes | 3 | |
| DUBI | Lemur XOR | 40 | |
| neinei00 | Unencryptable | 125 | |
| Kodyvim | Chinese Remainder Theorem | 40 | |
| Citizen | Base64 | 10 | |
| CryptoCracks | Jack's Birthday Hash | 20 | |
| OranS | Euler's Totient | 20 | |
| neinei00 | Roll your Own | 125 |
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