| Date | User | Challenge | Score |
| samshan | Extended GCD | 20 | |
| martyrant | Non-Interactive | 35 | |
| psoet | Bytes and Big Integers | 10 | |
| samshan | Greatest Common Divisor | 15 | |
| wyaptw | What's a Lattice? | 40 | |
| moskanor | Bytes and Big Integers | 10 | |
| moskanor | Base64 | 10 | |
| wyaptw | Size and Basis | 15 | |
| wyaptw | Vectors | 10 | |
| zDark | Public Keys | 15 | |
| gofmank | Ron was Wrong, Whit is Right | 90 | |
| moskanor | Hex | 5 | |
| 4nkh44__ | Finding Flags | 2 | |
| cavazinf | MDFlag | 125 | |
| OutOfTheWell | Broken RSA | 100 | |
| safireau | Base64 | 10 | |
| moskanor | ASCII | 5 | |
| gofmank | Introduction to Isogenies | 10 | |
| ventie | You either know, XOR you don't | 30 | |
| ventie | Favourite byte | 20 | |
| FernandoValle | Base64 | 10 | |
| atf | Resisting Bruteforce | 10 | |
| atf | Keyed Permutations | 5 | |
| faslane2 | ASCII | 5 | |
| MarceloR05 | Bytes and Big Integers | 10 | |
| kevrodriguez | You either know, XOR you don't | 30 | |
| kevrodriguez | Favourite byte | 20 | |
| gofmank | Confusion through Substitution | 25 | |
| zDark | Modular Exponentiation | 10 | |
| kevrodriguez | XOR Properties | 15 | |
| MarceloR05 | Base64 | 10 | |
| martyrant | Honest Verifier Zero Knowledge | 30 | |
| kevrodriguez | XOR Starter | 10 | |
| kevrodriguez | Bytes and Big Integers | 10 | |
| faslane2 | Great Snakes | 3 | |
| MarceloR05 | Hex | 5 | |
| FernandoValle | Hex | 5 | |
| martyrant | Special Soundness | 25 | |
| MarceloR05 | ASCII | 5 | |
| crypto_07 | Quadratic Residues | 25 | |
| atf | Finding Flags | 2 | |
| MarceloR05 | Great Snakes | 3 | |
| martyrant | Proofs of Knowledge | 20 | |
| MarceloR05 | Finding Flags | 2 | |
| FernandoValle | ASCII | 5 | |
| Anass67 | Modulus Inutilis | 50 | |
| ANGEL000001 | Network Attacks | 5 | |
| FernandoValle | Great Snakes | 3 | |
| ANGEL000001 | Great Snakes | 3 | |
| kevrodriguez | Base64 | 10 |
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