| Date | User | Challenge | Score |
| DeViator | Manyprime | 40 | |
| lalo404 | You either know, XOR you don't | 30 | |
| cuuntzu | XOR Starter | 10 | |
| ds0xxd3r | Network Attacks | 5 | |
| 2021lzy | Extended GCD | 20 | |
| aizer3 | You either know, XOR you don't | 30 | |
| gyul_ | Legendre Symbol | 35 | |
| Dcaha001 | ASCII | 5 | |
| nameerah | Base64 | 10 | |
| cuuntzu | Bytes and Big Integers | 10 | |
| matraz60 | Hex | 5 | |
| lucasmellastack | Great Snakes | 3 | |
| minjun | Gaussian Reduction | 50 | |
| matraz60 | ASCII | 5 | |
| SGT0v0 | Modular Arithmetic 1 | 20 | |
| nameerah | Hex | 5 | |
| ds0xxd3r | Moving Problems | 150 | |
| Hanz_3816 | Modes of Operation Starter | 15 | |
| lalo404 | Favourite byte | 20 | |
| matraz60 | Great Snakes | 3 | |
| aandddd | XOR Properties | 15 | |
| aandddd | XOR Starter | 10 | |
| lucasmellastack | Finding Flags | 2 | |
| lalo404 | XOR Properties | 15 | |
| aandddd | Bytes and Big Integers | 10 | |
| eunsoo | Diffusion through Permutation | 30 | |
| NotAtAllSus | Modular Binomials | 80 | |
| syadidd | Salty | 20 | |
| lalo404 | XOR Starter | 10 | |
| minjun | What's a Lattice? | 40 | |
| aizer3 | Favourite byte | 20 | |
| Nadarama | Diffusion through Permutation | 30 | |
| b1b00www | Noise Free | 40 | |
| Anudeepa | Finding Flags | 2 | |
| lalo404 | Bytes and Big Integers | 10 | |
| cuuntzu | Base64 | 10 | |
| syadidd | Manyprime | 40 | |
| twang | Passwords as Keys | 50 | |
| pjmgc | Smooth Criminal | 60 | |
| lalo404 | Base64 | 10 | |
| minjun | Gram Schmidt | 30 | |
| matraz60 | Finding Flags | 2 | |
| zeroboat | Hex | 5 | |
| bobiealice | LWE Background | 5 | |
| AspGee | ASCII | 5 | |
| aandddd | Base64 | 10 | |
| lalo404 | Hex | 5 | |
| zeroboat | ASCII | 5 | |
| DeViator | Monoprime | 30 | |
| lalo404 | ASCII | 5 |
You are now level Current level