| Date | User | Challenge | Score |
| UrSourceCode | Favourite byte | 20 | |
| Duster | Computing Public Values | 25 | |
| YouDecide | Modular Square Root | 35 | |
| Subihenuer | Chinese Remainder Theorem | 40 | |
| Sanxpher | Finding Flags | 2 | |
| defa | Proofs of Knowledge | 20 | |
| Honoured_One | XOR Properties | 15 | |
| hodinhtri30 | XOR Properties | 15 | |
| MrPuPa | XOR Starter | 10 | |
| commandos | Ticket Maestro | 200 | |
| gkaanls | Backpack Cryptography | 120 | |
| commandos | Ticket Maestro (CryptoHack) | 0 | |
| seqo | Greatest Common Divisor | 15 | |
| hodinhtri30 | XOR Starter | 10 | |
| GeoJan | You either know, XOR you don't | 30 | |
| Honoured_One | XOR Starter | 10 | |
| IOSA | Quadratic Residues | 25 | |
| MGsolver | Great Snakes | 3 | |
| Stephen_A | Greatest Common Divisor | 15 | |
| hodinhtri30 | Bytes and Big Integers | 10 | |
| Stephen_A | You either know, XOR you don't | 30 | |
| Stephen_A | Favourite byte | 20 | |
| CharmingMan | Legendre Symbol | 35 | |
| GeoJan | Favourite byte | 20 | |
| Stephen_A | XOR Properties | 15 | |
| Stephen_A | XOR Starter | 10 | |
| Kabuto_Wiz | XOR Starter | 10 | |
| Cupi | Everything is Still Big | 100 | |
| Stephen_A | Encoding Challenge | 40 | |
| Stephen_A | Bytes and Big Integers | 10 | |
| thar_n_adhithya | XOR Starter | 10 | |
| Stephen_A | Base64 | 10 | |
| Stephen_A | Hex | 5 | |
| Stephen_A | ASCII | 5 | |
| MGsolver | Finding Flags | 2 | |
| Stephen_A | The Matrix Revolutions | 125 | |
| Stephen_A | The Matrix Reloaded | 100 | |
| Stephen_A | The Matrix | 75 | |
| Stephen_A | Script Kiddie | 70 | |
| Stephen_A | Static Client 2 | 120 | |
| Stephen_A | Additive | 70 | |
| Stephen_A | Static Client | 100 | |
| Stephen_A | Export-grade | 100 | |
| Stephen_A | Parameter Injection | 60 | |
| Stephen_A | Computing Public Values | 25 | |
| pedropca | Favourite byte | 20 | |
| Stephen_A | Generators of Groups | 20 | |
| IOSA | RSA Decryption | 20 | |
| Stephen_A | Working with Fields | 10 | |
| GeoJan | XOR Properties | 15 |
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