| Date | User | Challenge | Score |
| shrexington | Modular Square Root | 35 | |
| Umbrellion | XOR Properties | 15 | |
| shrexington | Legendre Symbol | 35 | |
| danielagatan | Factoring | 15 | |
| smilingcat | XOR Properties | 15 | |
| Yiyouyy | Greatest Common Divisor | 15 | |
| Harshil1110 | Diffusion through Permutation | 30 | |
| danielagatan | RSA Signatures | 25 | |
| htx26 | Bytes and Big Integers | 10 | |
| bluesnap | Modular Binomials | 80 | |
| Yiyouyy | You either know, XOR you don't | 30 | |
| Maya_cabin_6 | XOR Properties | 15 | |
| Yiyouyy | Favourite byte | 20 | |
| danielagatan | RSA Decryption | 20 | |
| danielagatan | Private Keys | 20 | |
| danielagatan | Euler's Totient | 20 | |
| ASN_123 | Great Snakes | 3 | |
| chchh | Modular Binomials | 80 | |
| ASN_123 | Finding Flags | 2 | |
| Yiyouyy | XOR Properties | 15 | |
| danielagatan | Public Keys | 15 | |
| danielagatan | Modular Exponentiation | 10 | |
| bluesnap | Adrien's Signs | 80 | |
| dstm45 | XOR Starter | 10 | |
| Yiyouyy | XOR Starter | 10 | |
| chchh | Adrien's Signs | 80 | |
| rakshas | Greatest Common Divisor | 15 | |
| Naoooooo | Finding Flags | 2 | |
| htx26 | Base64 | 10 | |
| htx26 | Hex | 5 | |
| htx26 | ASCII | 5 | |
| htx26 | Great Snakes | 3 | |
| Maya_cabin_6 | XOR Starter | 10 | |
| rakshas | You either know, XOR you don't | 30 | |
| htx26 | Finding Flags | 2 | |
| Shr0ud | Diffusion through Permutation | 30 | |
| mmd1hp | Transparency | 50 | |
| rakshas | Favourite byte | 20 | |
| bonpepe | Passwords as Keys | 50 | |
| aloof | OR Proof | 75 | |
| kasamaru | You either know, XOR you don't | 30 | |
| Umbrellion | XOR Starter | 10 | |
| Yiyouyy | Bytes and Big Integers | 10 | |
| R00tSeek3r | Bytes and Big Integers | 10 | |
| rakshas | XOR Properties | 15 | |
| mmd1hp | SSH Keys | 35 | |
| chick3n_nugget | Hex | 5 | |
| chick3n_nugget | ASCII | 5 | |
| chick3n_nugget | Great Snakes | 3 | |
| chick3n_nugget | Finding Flags | 2 |
You are now level Current level