| Date | User | Challenge | Score |
| crowcell | Modes of Operation Starter | 15 | |
| crowcell | Bringing It All Together | 50 | |
| dman | Modular Arithmetic 2 | 20 | |
| beheaded | Favourite byte | 20 | |
| amirroot | Base64 | 10 | |
| paulihno15 | Adrien's Signs | 80 | |
| semisweetdude | Salty | 20 | |
| anas123 | Bytes and Big Integers | 10 | |
| Shelob | Chinese Remainder Theorem | 40 | |
| ellie_m | Quadratic Residues | 25 | |
| toroguchi | XOR Properties | 15 | |
| anas123 | Base64 | 10 | |
| beheaded | XOR Properties | 15 | |
| toroguchi | XOR Starter | 10 | |
| duprst | Finding Flags | 2 | |
| dman | Modular Arithmetic 1 | 20 | |
| toroguchi | Bytes and Big Integers | 10 | |
| dlqfr0m3arth | Extended GCD | 20 | |
| anas123 | Hex | 5 | |
| anas123 | ASCII | 5 | |
| anas123 | Great Snakes | 3 | |
| dman | Extended GCD | 20 | |
| anas123 | Finding Flags | 2 | |
| salvra_ | ASCII | 5 | |
| semisweetdude | Manyprime | 40 | |
| Mardiaz | Great Snakes | 3 | |
| s3bxs | Greatest Common Divisor | 15 | |
| c4e | The j-invariant | 20 | |
| toroguchi | Base64 | 10 | |
| c4e | Introduction to Isogenies | 10 | |
| jiraa23 | Keyed Permutations | 5 | |
| WhatWasThat | Legendre Symbol | 35 | |
| l3th4l | Honest Verifier Zero Knowledge | 30 | |
| salvra_ | Great Snakes | 3 | |
| dlqfr0m3arth | Greatest Common Divisor | 15 | |
| salvra_ | Finding Flags | 2 | |
| lgrr | Quadratic Residues | 25 | |
| duckman_46 | Extended GCD | 20 | |
| Hoshi_Batista | Greatest Common Divisor | 15 | |
| toroguchi | Hex | 5 | |
| dlqfr0m3arth | You either know, XOR you don't | 30 | |
| duckman_46 | Greatest Common Divisor | 15 | |
| dman | Greatest Common Divisor | 15 | |
| A_Rookie | Base64 | 10 | |
| A_Rookie | Hex | 5 | |
| toroguchi | ASCII | 5 | |
| A_Rookie | ASCII | 5 | |
| toroguchi | Great Snakes | 3 | |
| Globules | Lemur XOR | 40 | |
| toroguchi | Finding Flags | 2 |
You are now level Current level