| Date | User | Challenge | Score |
| andrearacc | Modular Square Root | 35 | |
| MahmoodTavafoghi | Greatest Common Divisor | 15 | |
| Udargabi | XOR Starter | 10 | |
| aztec_kke | Base64 | 10 | |
| Danonek | ASCII | 5 | |
| Loivan | Hex | 5 | |
| ForJ | Forbidden Fruit | 150 | |
| mooooooo | XOR Starter | 10 | |
| aztec_kke | Hex | 5 | |
| Udargabi | Bytes and Big Integers | 10 | |
| aztec_kke | ASCII | 5 | |
| aztec_kke | Great Snakes | 3 | |
| andrearacc | Legendre Symbol | 35 | |
| mooooooo | Bytes and Big Integers | 10 | |
| rakib314167 | Modular Arithmetic 1 | 20 | |
| aztec_kke | Finding Flags | 2 | |
| Loivan | ASCII | 5 | |
| jaiveersingh | Modular Binomials | 80 | |
| SubmarineQuantum | XOR Starter | 10 | |
| MrYacin | Favourite byte | 20 | |
| eunsoo | Salty | 20 | |
| SubmarineQuantum | Bytes and Big Integers | 10 | |
| ltwind_v2 | Megalomaniac 3 | 120 | |
| FLOKI | Bytes and Big Integers | 10 | |
| Vinjr | Mister Saplins The Prover | 125 | |
| Nadarama | Salty | 20 | |
| Loivan | Network Attacks | 5 | |
| MrYacin | XOR Properties | 15 | |
| mooooooo | Base64 | 10 | |
| Loivan | Great Snakes | 3 | |
| SubmarineQuantum | Base64 | 10 | |
| dlhxfy | Modulus Inutilis | 50 | |
| shurayz | WOTS Up 2 | 90 | |
| eunsoo | Manyprime | 40 | |
| joey3246 | You either know, XOR you don't | 30 | |
| dlhxfy | Working with Fields | 10 | |
| NanCheng | Quadratic Residues | 25 | |
| mooooooo | Hex | 5 | |
| Blue_ | Couples | 100 | |
| SubmarineQuantum | Hex | 5 | |
| Htet | Bytes and Big Integers | 10 | |
| Adrinn | Greatest Common Divisor | 15 | |
| SubmarineQuantum | ASCII | 5 | |
| mooooooo | ASCII | 5 | |
| dlhxfy | Salty | 20 | |
| MrYacin | XOR Starter | 10 | |
| Suica | XOR Properties | 15 | |
| NanCheng | Modular Inverting | 25 | |
| MrYacin | Bytes and Big Integers | 10 | |
| SubmarineQuantum | Great Snakes | 3 |
You are now level Current level