| Date | User | Challenge | Score |
| Aisultan | Base64 | 10 | |
| Alisherzxc | Greatest Common Divisor | 15 | |
| Alisherzxc | Lemur XOR | 40 | |
| mikuleci | Gaussian Reduction | 50 | |
| Aisultan | Hex | 5 | |
| bodymo20000 | Modulus Inutilis | 50 | |
| Aisultan | ASCII | 5 | |
| mikuleci | What's a Lattice? | 40 | |
| mikuleci | Gram Schmidt | 30 | |
| Aisultan | Network Attacks | 5 | |
| Nonobari | Favourite byte | 20 | |
| Yosof_72 | Monoprime | 30 | |
| ammara19 | Greatest Common Divisor | 15 | |
| Aisultan | Great Snakes | 3 | |
| Aisultan | Finding Flags | 2 | |
| mikuleci | Size and Basis | 15 | |
| Ret2skillz | Resisting Bruteforce | 10 | |
| mikuleci | Vectors | 10 | |
| Alisherzxc | You either know, XOR you don't | 30 | |
| LoLiPoP190 | Favourite byte | 20 | |
| gil6 | Introduction to Isogenies | 10 | |
| Yosof_72 | Factoring | 15 | |
| mikuleci | RSA Decryption | 20 | |
| Alisherzxc | Favourite byte | 20 | |
| Acrobatis22 | Generators of Groups | 20 | |
| mikuleci | Private Keys | 20 | |
| RudenShtanger | Encoding Challenge | 40 | |
| riskneutral | Favourite byte | 20 | |
| mikuleci | Euler's Totient | 20 | |
| Alisherzxc | XOR Properties | 15 | |
| mikuleci | Public Keys | 15 | |
| Alisherzxc | XOR Starter | 10 | |
| Acrobatis22 | Working with Fields | 10 | |
| mikuleci | Modular Exponentiation | 10 | |
| Alisherzxc | Encoding Challenge | 40 | |
| GlaerG | Hex | 5 | |
| bncybz | You either know, XOR you don't | 30 | |
| Alisherzxc | Bytes and Big Integers | 10 | |
| LoLiPoP190 | XOR Properties | 15 | |
| GlaerG | Bytes and Big Integers | 10 | |
| Seventt | Hash Stuffing | 50 | |
| Acrobatis22 | Confusion through Substitution | 25 | |
| JO_007 | Backpack Cryptography | 120 | |
| GlaerG | Base64 | 10 | |
| Delss30 | XOR Starter | 10 | |
| GlaerG | ASCII | 5 | |
| Adem0 | Point Negation | 10 | |
| Alisherzxc | Base64 | 10 | |
| iris_ai | You either know, XOR you don't | 30 | |
| LoLiPoP190 | XOR Starter | 10 |
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