| Date | User | Challenge | Score |
| sans1441 | Quadratic Residues | 25 | |
| blazspaca | Square Eyes | 35 | |
| rabbitfox | Network Attacks | 5 | |
| aresinheaven | Too Many Errors | 100 | |
| blazspaca | Monoprime | 30 | |
| Eaglex | Modular Arithmetic 1 | 20 | |
| aresinheaven | Noise Cheap | 90 | |
| blazspaca | Inferius Prime | 30 | |
| elesquina | Symmetry | 50 | |
| Eaglex | Extended GCD | 20 | |
| chrispapaoic | Greatest Common Divisor | 15 | |
| blazspaca | Factoring | 15 | |
| aresinheaven | From Private to Public Key LWE | 25 | |
| thaily04 | Modular Inverting | 25 | |
| thaily04 | Modular Arithmetic 2 | 20 | |
| aresinheaven | LWE Low Bits Message | 20 | |
| yuguang | Legendre Symbol | 35 | |
| ordekmomo | Greatest Common Divisor | 15 | |
| aresinheaven | LWE High Bits Message | 15 | |
| sans1441 | Modular Inverting | 25 | |
| Ar3A_0 | Modular Arithmetic 1 | 20 | |
| thaily04 | Modular Arithmetic 1 | 20 | |
| sans1441 | Modular Arithmetic 2 | 20 | |
| sans1441 | Modular Arithmetic 1 | 20 | |
| aresinheaven | Backpack Cryptography | 120 | |
| akabeco | Resisting Bruteforce | 10 | |
| sans1441 | Extended GCD | 20 | |
| K4tou | An Evil Twisted Mind | 175 | |
| DFault | Base64 | 10 | |
| DFault | Hex | 5 | |
| akabeco | Keyed Permutations | 5 | |
| DFault | ASCII | 5 | |
| aresinheaven | Find the Lattice | 100 | |
| hkarapetyan | Adrien's Signs | 80 | |
| DFault | Great Snakes | 3 | |
| conmeodilac | Factoring | 15 | |
| brookshook | ASCII | 5 | |
| brookshook | Great Snakes | 3 | |
| brookshook | Finding Flags | 2 | |
| nhnamp | Network Attacks | 5 | |
| Eaglex | Greatest Common Divisor | 15 | |
| XK3n | ASCII | 5 | |
| elesquina | Flipping Cookie | 60 | |
| rabbitfox | Great Snakes | 3 | |
| rabbitfox | Finding Flags | 2 | |
| nnarek | Jack's Birthday Confusion | 30 | |
| mbongisenit | Passwords as Keys | 50 | |
| vikaran | Modular Inverting | 25 | |
| XK3n | Finding Flags | 2 | |
| hkarapetyan | Chinese Remainder Theorem | 40 |
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