| Date | User | Challenge | Score |
| 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 | |
| nameerah | ASCII | 5 | |
| zeroboat | Great Snakes | 3 | |
| lalo404 | Great Snakes | 3 | |
| gyul_ | Quadratic Residues | 25 | |
| zeroboat | Finding Flags | 2 | |
| aandddd | Hex | 5 | |
| bobiealice | What's a Lattice? | 40 | |
| minjun | Size and Basis | 15 | |
| aandddd | ASCII | 5 | |
| minjun | Vectors | 10 | |
| aandddd | Great Snakes | 3 | |
| lalo404 | Finding Flags | 2 | |
| aizer3 | XOR Properties | 15 | |
| cuuntzu | Hex | 5 | |
| nameerah | Great Snakes | 3 | |
| Nadarama | Confusion through Substitution | 25 | |
| aandddd | Finding Flags | 2 | |
| nameerah | Finding Flags | 2 | |
| eunsoo | Round Keys | 20 | |
| levelddp | You either know, XOR you don't | 30 | |
| Junezq | Favourite byte | 20 | |
| AspGee | Great Snakes | 3 | |
| JunhyeongShin | Smooth Criminal | 60 | |
| Nadarama | Round Keys | 20 | |
| bobiealice | Gram Schmidt | 30 | |
| ds0xxd3r | ProSign 3 | 100 | |
| DavidTruong | ZKP Introduction | 5 | |
| Z10UD1 | Modular Binomials | 80 |
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