| Date | User | Challenge | Score |
| KongBai | Chinese Remainder Theorem | 40 | |
| rafaelmesina | XOR Properties | 15 | |
| platon17 | Export-grade | 100 | |
| Akpa2306 | Legendre Symbol | 35 | |
| rafaelmesina | XOR Starter | 10 | |
| Huyyeuthu2104 | Triple DES | 60 | |
| Kyle_0215 | Working with Fields | 10 | |
| Alexey | Modular Inverting | 25 | |
| rafaelmesina | Bytes and Big Integers | 10 | |
| rafaelmesina | Base64 | 10 | |
| rafaelmesina | Hex | 5 | |
| rafaelmesina | ASCII | 5 | |
| julian_kowa | XOR Starter | 10 | |
| Alexey | Modular Arithmetic 2 | 20 | |
| afmoroz | Efficient Exchange | 50 | |
| rafaelmesina | Great Snakes | 3 | |
| julian_kowa | Bytes and Big Integers | 10 | |
| T6n4 | ASCII | 5 | |
| isl4r | Quadratic Residues | 25 | |
| Alexey | Modular Arithmetic 1 | 20 | |
| rafaelmesina | Finding Flags | 2 | |
| afmoroz | Curves and Logs | 40 | |
| KongBai | Modular Square Root | 35 | |
| Akpa2306 | Quadratic Residues | 25 | |
| Alexey | Extended GCD | 20 | |
| KHUCrypt | Hex | 5 | |
| Ja4V8s28Ck | Pad Thai | 80 | |
| KHUCrypt | ASCII | 5 | |
| KHUCrypt | Great Snakes | 3 | |
| KHUCrypt | Finding Flags | 2 | |
| kitxt | Public Keys | 15 | |
| trannhat | Modular Binomials | 80 | |
| kitxt | Modular Exponentiation | 10 | |
| julian_kowa | Base64 | 10 | |
| julian_kowa | Hex | 5 | |
| vic1208 | Exceptional Curves | 100 | |
| julian_kowa | ASCII | 5 | |
| T6n4 | Great Snakes | 3 | |
| julian_kowa | Great Snakes | 3 | |
| Alexey | Greatest Common Divisor | 15 | |
| afmoroz | Scalar Multiplication | 35 | |
| julian_kowa | Finding Flags | 2 | |
| moystee | Secure Protocols | 5 | |
| T6n4 | Finding Flags | 2 | |
| Alexey | You either know, XOR you don't | 30 | |
| whoami4 | Structure of AES | 15 | |
| ibrahimk | Base64 | 10 | |
| KongBai | Legendre Symbol | 35 | |
| m4nk1nd | XOR Starter | 10 | |
| yunseo | Quadratic Residues | 25 |
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