| Date | User | Challenge | Score |
| yikes | Finding Flags | 2 | |
| Asim_kk | Modular Arithmetic 2 | 20 | |
| Asim_kk | Modular Arithmetic 1 | 20 | |
| Asim_kk | Extended GCD | 20 | |
| Asim_kk | Greatest Common Divisor | 15 | |
| kwstas486 | Favourite byte | 20 | |
| Asim_kk | Lemur XOR | 40 | |
| Asim_kk | You either know, XOR you don't | 30 | |
| Asim_kk | Favourite byte | 20 | |
| Asim_kk | XOR Properties | 15 | |
| Asim_kk | XOR Starter | 10 | |
| HackingWalross | Base64 | 10 | |
| Asim_kk | Encoding Challenge | 40 | |
| Rujul | XOR Starter | 10 | |
| DaRl1nge | Chinese Remainder Theorem | 40 | |
| Asim_kk | Bytes and Big Integers | 10 | |
| Asim_kk | Base64 | 10 | |
| HackingWalross | Hex | 5 | |
| CheeseTopia | You either know, XOR you don't | 30 | |
| Asim_kk | Hex | 5 | |
| bauglir16 | Quadratic Residues | 25 | |
| khanhdc7 | Modular Square Root | 35 | |
| Asim_kk | ASCII | 5 | |
| kwstas486 | XOR Properties | 15 | |
| Asim_kk | Network Attacks | 5 | |
| Asim_kk | Great Snakes | 3 | |
| Rujul | Bytes and Big Integers | 10 | |
| Asim_kk | Finding Flags | 2 | |
| CheeseTopia | Favourite byte | 20 | |
| demr | Signing Server | 60 | |
| ValeriaSm7329 | Modular Arithmetic 1 | 20 | |
| miguelborges2206 | XOR Starter | 10 | |
| de4dhorse | Modular Inverting | 25 | |
| ValeriaSm7329 | Extended GCD | 20 | |
| mm302 | Keyed Permutations | 5 | |
| Ripanzul | Modular Inverting | 25 | |
| Chris1sFlaggin | Lemur XOR | 40 | |
| blavkice | You either know, XOR you don't | 30 | |
| fansel | You either know, XOR you don't | 30 | |
| sisi12 | Great Snakes | 3 | |
| asger084 | You either know, XOR you don't | 30 | |
| z0mb13L0v3r | You either know, XOR you don't | 30 | |
| de4dhorse | Modular Arithmetic 2 | 20 | |
| Morten | Bytes and Big Integers | 10 | |
| catarinalima1304 | XOR Properties | 15 | |
| de4dhorse | Modular Arithmetic 1 | 20 | |
| geoduck7 | You either know, XOR you don't | 30 | |
| bWlrYQ | XOR Starter | 10 | |
| bWlrYQ | Bytes and Big Integers | 10 | |
| Sadin | Favourite byte | 20 |
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