| Date | User | Challenge | Score |
| AceNk | Curveball | 100 | |
| Tdawge | Legendre Symbol | 35 | |
| Beesee | Bytes and Big Integers | 10 | |
| GingerCarrot | Checkpoint | 150 | |
| idoHerojn | Modular Arithmetic 2 | 20 | |
| AceNk | Smooth Criminal | 60 | |
| junyouzin4209 | Greatest Common Multiple (CODEGATE CTF) | 0 | |
| ksenija | Bean Counter | 60 | |
| wilex11 | MDFlag | 125 | |
| ksenija | Symmetry | 50 | |
| ksenija | Flipping Cookie | 60 | |
| simrol260 | You either know, XOR you don't | 30 | |
| ksenija | ECB CBC WTF | 55 | |
| ksenija | ECB Oracle | 60 | |
| y0dam4n | Micro Transmissions | 120 | |
| ksenija | Passwords as Keys | 50 | |
| simrol260 | Favourite byte | 20 | |
| Zxum43a1 | Base64 | 10 | |
| monusuper | Great Snakes | 3 | |
| simrol260 | XOR Properties | 15 | |
| misfitx | Greatest Common Divisor | 15 | |
| wilex11 | MD0 | 80 | |
| DeusVultInfidel | You either know, XOR you don't | 30 | |
| ksenija | Modes of Operation Starter | 15 | |
| vivisect0r | Dancing Queen | 120 | |
| falconejulian | SIDH Key Exchange | 80 | |
| ksenija | Bringing It All Together | 50 | |
| shakarora | RSA Decryption | 20 | |
| falconejulian | Breaking SIDH | 250 | |
| shakarora | Modular Exponentiation | 10 | |
| d0577 | Network Attacks | 5 | |
| Zxum43a1 | Hex | 5 | |
| r0hit | Moving Problems | 150 | |
| ksenija | Diffusion through Permutation | 30 | |
| Zxum43a1 | ASCII | 5 | |
| DeusVultInfidel | Favourite byte | 20 | |
| Marco89 | Legendre Symbol | 35 | |
| falconejulian | CSIDH Key Exchange | 90 | |
| DeusVultInfidel | XOR Properties | 15 | |
| Vinjr | Special Soundness | 25 | |
| KarlGoodGuy | Too Many Errors | 100 | |
| ksenija | Confusion through Substitution | 25 | |
| NPeter | JWT Secrets | 25 | |
| NPeter | No Way JOSE | 20 | |
| NPeter | JWT Sessions | 10 | |
| DeusVultInfidel | XOR Starter | 10 | |
| NPeter | Token Appreciation | 5 | |
| panman4040 | You either know, XOR you don't | 30 | |
| DeusVultInfidel | Bytes and Big Integers | 10 | |
| KA183R | XOR Starter | 10 |
You are now level Current level