| Date | User | Challenge | Score |
| cyb_org | Lemur XOR | 40 | |
| QwQll | Oh SNAP | 120 | |
| MeongGanas | Quadratic Residues | 25 | |
| hasuke | Resisting Bruteforce | 10 | |
| cyb_org | You either know, XOR you don't | 30 | |
| dlesk | Additive | 70 | |
| shura356 | Size and Basis | 15 | |
| rammous0819 | Quadratic Residues | 25 | |
| hasuke | Keyed Permutations | 5 | |
| shura356 | Vectors | 10 | |
| MeongGanas | Modular Inverting | 25 | |
| MeongGanas | Modular Arithmetic 2 | 20 | |
| deathknight | Lo-Hi Card Game | 120 | |
| deathknight | Trust Games | 150 | |
| deathknight | Toshi's Treasure | 150 | |
| deathknight | Bruce Schneier's Password | 100 | |
| bncybz | Ellipse Curve Cryptography | 125 | |
| cyb_org | Working with Fields | 10 | |
| francesco12311 | XOR Starter | 10 | |
| moe0l | A True Genus | 175 | |
| Ancines | ASCII | 5 | |
| Mrheisenburgers | Collider | 50 | |
| deathknight | Bit by Bit | 100 | |
| deathknight | Armory | 100 | |
| GG_gemink | Modes of Operation Starter | 15 | |
| Mycr0ft | You either know, XOR you don't | 30 | |
| deathknight | RSA vs RNG | 150 | |
| deathknight | No Leaks | 100 | |
| deathknight | Nothing Up My Sleeve | 150 | |
| deathknight | Jeff's LFSR | 150 | |
| deathknight | L-Win | 120 | |
| Ancines | Great Snakes | 3 | |
| deathknight | Ticket Maestro | 200 | |
| deathknight | Let's Prove It Again | 175 | |
| deathknight | Gotta Go Fast | 40 | |
| deathknight | ZKP Introduction | 5 | |
| deathknight | Mister Saplins The Prover | 125 | |
| Ancines | Finding Flags | 2 | |
| deathknight | Let's Prove It | 120 | |
| deathknight | Couples | 100 | |
| deathknight | Mister Saplin's Preview | 80 | |
| francesco12311 | Encoding Challenge | 40 | |
| deathknight | Hamiltonicity 1 | 100 | |
| deathknight | Hamiltonicity 2 | 175 | |
| deathknight | Pairing-Based Cryptography | 50 | |
| deathknight | Fischlin Transform | 180 | |
| Mycr0ft | Favourite byte | 20 | |
| Clear | Base64 | 10 | |
| moe0l | CSIDH Key Exchange | 90 | |
| Clear | Hex | 5 |
You are now level Current level