| Date | User | Challenge | Score |
| DaDeBi | Great Snakes | 3 | |
| CXPh03n1x | XOR Starter | 10 | |
| nurminen | Secure Protocols | 5 | |
| totdking | Modular Inverting | 25 | |
| nurminen | RSA or HMAC? Part 2 | 100 | |
| FuHongChen | Modular Square Root | 35 | |
| doosksax | Favourite byte | 20 | |
| CXPh03n1x | Bytes and Big Integers | 10 | |
| Capynocash | Favourite byte | 20 | |
| CXPh03n1x | Base64 | 10 | |
| CXPh03n1x | Hex | 5 | |
| Capynocash | XOR Properties | 15 | |
| Mohini | Point Negation | 10 | |
| FuHongChen | Legendre Symbol | 35 | |
| CXPh03n1x | ASCII | 5 | |
| Aryaethn | Collider | 50 | |
| CXPh03n1x | Great Snakes | 3 | |
| kuso21 | Micro Transmissions | 120 | |
| totdking | Modular Arithmetic 2 | 20 | |
| CXPh03n1x | Finding Flags | 2 | |
| FuHongChen | Quadratic Residues | 25 | |
| Forza123 | Quadratic Residues | 25 | |
| IIFlynzz | Finding Flags | 2 | |
| FuHongChen | Modular Inverting | 25 | |
| FuHongChen | Modular Arithmetic 2 | 20 | |
| FuHongChen | Modular Arithmetic 1 | 20 | |
| johnpork | Extended GCD | 20 | |
| FuHongChen | Extended GCD | 20 | |
| skiller3478 | Endless Emails | 150 | |
| Abinesh | You either know, XOR you don't | 30 | |
| AllanPoe | Diffusion through Permutation | 30 | |
| FuHongChen | Greatest Common Divisor | 15 | |
| charwin_boy_777 | Favourite byte | 20 | |
| charwin_boy_777 | XOR Properties | 15 | |
| TerezaGr_p22037 | Generators of Groups | 20 | |
| Nama | Encoding Challenge | 40 | |
| carson0 | ASCII | 5 | |
| doosksax | XOR Properties | 15 | |
| Ghost25 | Favourite byte | 20 | |
| charwin_boy_777 | XOR Starter | 10 | |
| Aryaethn | Jack's Birthday Confusion | 30 | |
| Aryaethn | Jack's Birthday Hash | 20 | |
| TerezaGr_p22037 | Working with Fields | 10 | |
| Sakurine | Chinese Remainder Theorem | 40 | |
| Yuzuu | Greatest Common Divisor | 15 | |
| doosksax | XOR Starter | 10 | |
| Sakurine | Modular Square Root | 35 | |
| moozwen | Base64 | 10 | |
| imsonoob | Greatest Common Divisor | 15 | |
| Bune | Resisting Bruteforce | 10 |
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