| Date | User | Challenge | Score |
| Brandongrait | Greatest Common Divisor | 15 | |
| n0ah | Modulus Inutilis | 50 | |
| Ch0p5h0p | XOR Starter | 10 | |
| rush_i | Modulus Inutilis | 50 | |
| fken_57 | Chinese Remainder Theorem | 40 | |
| navin79 | Favourite byte | 20 | |
| AESpider | Invariant | 250 | |
| fken_57 | Modular Square Root | 35 | |
| rush_i | Salty | 20 | |
| Fa1zher | Great Snakes | 3 | |
| muhtasim_apon | You either know, XOR you don't | 30 | |
| dlesk | Couples | 100 | |
| Ch0p5h0p | Bytes and Big Integers | 10 | |
| muhtasim_apon | Favourite byte | 20 | |
| Ch0p5h0p | Base64 | 10 | |
| Ch0p5h0p | Hex | 5 | |
| Ch0p5h0p | ASCII | 5 | |
| Ch0p5h0p | Great Snakes | 3 | |
| muhtasim_apon | XOR Properties | 15 | |
| hasuke | Euler's Totient | 20 | |
| brew | Size and Basis | 15 | |
| AESpider | Mixed Up | 120 | |
| night_owl | OR Proof | 75 | |
| night_owl | OR Proof (CryptoHack) | 0 | |
| hasuke | Public Keys | 15 | |
| brew | Vectors | 10 | |
| hasuke | Modular Exponentiation | 10 | |
| lukerking | Greatest Common Divisor | 15 | |
| spikeS | Resisting Bruteforce | 10 | |
| muhtasim_apon | XOR Starter | 10 | |
| spikeS | Keyed Permutations | 5 | |
| muhtasim_apon | Bytes and Big Integers | 10 | |
| lukerking | Lemur XOR | 40 | |
| dlesk | Pairing-Based Cryptography | 50 | |
| trashcan08 | Smooth Criminal | 60 | |
| F4R3S | Great Snakes | 3 | |
| F4R3S | Finding Flags | 2 | |
| Zealous8067 | Hamiltonicity 2 | 175 | |
| Zealous8067 | Hamiltonicity 2 (CryptoHack) | 0 | |
| GeorgeSor | You either know, XOR you don't | 30 | |
| trashcan08 | Montgomery's Ladder | 40 | |
| Asklo | Keyed Permutations | 5 | |
| Asklo | Modular Binomials | 80 | |
| ahmedm3laa | You either know, XOR you don't | 30 | |
| GeorgeSor | Favourite byte | 20 | |
| Fa1zher | Finding Flags | 2 | |
| GeorgeSor | XOR Properties | 15 | |
| currywurstsalat7 | XOR Starter | 10 | |
| ZemonZE | Base64 | 10 | |
| WarSpore | Oracular Spectacular | 150 |
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