| Date | User | Challenge | Score |
| matiosos | Bytes and Big Integers | 10 | |
| bashrc | Special Soundness | 25 | |
| nprat | Generators of Groups | 20 | |
| ltwind_v2 | A Twisted Mind | 80 | |
| n40y | Diffusion through Permutation | 30 | |
| bashrc | Proofs of Knowledge | 20 | |
| katanabeneficial | Flipping Cookie | 60 | |
| sakshamy123 | ASCII | 5 | |
| KISHORE_T | ASCII | 5 | |
| feynhat | Network Attacks | 5 | |
| KISHORE_T | Great Snakes | 3 | |
| bashrc | ZKP Introduction | 5 | |
| EcheExpert | You either know, XOR you don't | 30 | |
| jskeob | Jack's Birthday Confusion | 30 | |
| sakshamy123 | Finding Flags | 2 | |
| jskeob | Jack's Birthday Hash | 20 | |
| bashrc | Pairing-Based Cryptography | 50 | |
| jinseo | Digestive | 60 | |
| bashrc | Mister Saplin's Preview | 80 | |
| Lixlee | Finding Flags | 2 | |
| bashrc | Couples | 100 | |
| Dytzi | Finding Flags | 2 | |
| bashrc | Let's Prove It | 120 | |
| Liel | Great Snakes | 3 | |
| Sudo_Rajkumar | Privacy-Enhanced Mail? | 25 | |
| bashrc | Mister Saplins The Prover | 125 | |
| Liel | Finding Flags | 2 | |
| bashrc | Let's Prove It Again | 175 | |
| Sudo_Rajkumar | Modular Inverting | 25 | |
| Sudo_Rajkumar | Modular Arithmetic 2 | 20 | |
| Sudo_Rajkumar | Modular Arithmetic 1 | 20 | |
| KISHORE_T | Finding Flags | 2 | |
| Sudo_Rajkumar | Extended GCD | 20 | |
| EcheExpert | Favourite byte | 20 | |
| sigillino | ZKP Introduction | 5 | |
| Sudo_Rajkumar | Greatest Common Divisor | 15 | |
| J4LL | XOR Starter | 10 | |
| Sudo_Rajkumar | Lemur XOR | 40 | |
| Anubis1 | Favourite byte | 20 | |
| bashrc | Toshi's Treasure | 150 | |
| nprat | Working with Fields | 10 | |
| Sudo_Rajkumar | You either know, XOR you don't | 30 | |
| nprat | Modulus Inutilis | 50 | |
| zeefromzee | Modular Square Root | 35 | |
| Sudo_Rajkumar | Favourite byte | 20 | |
| hadock | Great Snakes | 3 | |
| slopezo | Finding Flags | 2 | |
| cof123 | Triple DES | 60 | |
| Donho_227 | Base64 | 10 | |
| tranchsanto | Bruce Schneier's Password: Part 2 | 250 |
You are now level Current level