| Date | User | Challenge | Score |
| chk1414 | Hex | 5 | |
| 19030623652 | Finding Flags | 2 | |
| 4r3s | You either know, XOR you don't | 30 | |
| toniokan | Base64 | 10 | |
| chk1414 | ASCII | 5 | |
| patawee | Base64 | 10 | |
| chk1414 | Great Snakes | 3 | |
| chk1414 | Finding Flags | 2 | |
| 4r3s | Favourite byte | 20 | |
| patawee | Hex | 5 | |
| Georgtrismegists | Bytes and Big Integers | 10 | |
| realchale08 | Favourite byte | 20 | |
| realchale08 | XOR Properties | 15 | |
| 4r3s | XOR Properties | 15 | |
| ykm | Base64 | 10 | |
| youssef_reda | Working with Fields | 10 | |
| 4r3s | XOR Starter | 10 | |
| 4r3s | Bytes and Big Integers | 10 | |
| 4r3s | Base64 | 10 | |
| realchale08 | XOR Starter | 10 | |
| lxy6666 | You either know, XOR you don't | 30 | |
| 4r3s | Hex | 5 | |
| 4r3s | ASCII | 5 | |
| realchale08 | Bytes and Big Integers | 10 | |
| 4r3s | Great Snakes | 3 | |
| lxy6666 | Favourite byte | 20 | |
| patawee | ASCII | 5 | |
| realchale08 | Base64 | 10 | |
| lxy6666 | XOR Properties | 15 | |
| ngawipride67 | Modular Arithmetic 2 | 20 | |
| lxy6666 | XOR Starter | 10 | |
| lxy6666 | Bytes and Big Integers | 10 | |
| lxy6666 | Base64 | 10 | |
| dkoazwlearning | Jack's Birthday Confusion | 30 | |
| dkoazwlearning | Jack's Birthday Hash | 20 | |
| spinflipper31415 | Export-grade | 100 | |
| Blackgreen | Passwords as Keys | 50 | |
| thealoneman332 | Greatest Common Divisor | 15 | |
| anurag7 | Modular Arithmetic 1 | 20 | |
| fk | You either know, XOR you don't | 30 | |
| ykm | ASCII | 5 | |
| anurag7 | Extended GCD | 20 | |
| ngawipride67 | Modular Arithmetic 1 | 20 | |
| EnimaGIS | Base64 | 10 | |
| ykm | Great Snakes | 3 | |
| fk | Favourite byte | 20 | |
| realchale08 | Hex | 5 | |
| EnimaGIS | Hex | 5 | |
| fk | XOR Properties | 15 | |
| EnimaGIS | ASCII | 5 |
You are now level Current level