| Date | User | Challenge | Score |
| Foul | Keyed Permutations | 5 | |
| Ndubito | ASCII | 5 | |
| duckpancakes | Paper Plane | 120 | |
| brickzilla | Let's Decrypt Again | 175 | |
| Ndubito | Great Snakes | 3 | |
| Foul | Modular Binomials | 80 | |
| lili_wth | Hex | 5 | |
| Ndubito | Finding Flags | 2 | |
| Lulda | Modular Arithmetic 2 | 20 | |
| brickzilla | Vote for Pedro | 150 | |
| Lulda | Modular Arithmetic 1 | 20 | |
| brickzilla | Blinding Light | 120 | |
| lili_wth | ASCII | 5 | |
| brickzilla | Let's Decrypt | 80 | |
| lili_wth | Great Snakes | 3 | |
| ei15951 | SSH Keys | 35 | |
| brickzilla | Signing Server | 60 | |
| lili_wth | Finding Flags | 2 | |
| brickzilla | Null or Never | 100 | |
| dexter_nate27 | Ron was Wrong, Whit is Right | 90 | |
| ndespresso | Flipping Cookie | 60 | |
| _Kookie | Chinese Remainder Theorem | 40 | |
| brickzilla | Bespoke Padding | 100 | |
| ei15951 | CERTainly not | 30 | |
| Redwarg18 | Finding Flags | 2 | |
| brickzilla | RSA Backdoor Viability | 175 | |
| rito_sand | Resisting Bruteforce | 10 | |
| brickzilla | Ron was Wrong, Whit is Right | 90 | |
| bhalanimanav | You either know, XOR you don't | 30 | |
| M25 | Modular Inverting | 25 | |
| maershal | Keyed Permutations | 5 | |
| brickzilla | Fast Primes | 75 | |
| bhalanimanav | Favourite byte | 20 | |
| Lulda | Extended GCD | 20 | |
| brickzilla | Marin's Secrets | 50 | |
| brickzilla | Infinite Descent | 50 | |
| doanhaphong | Base64 | 10 | |
| bhalanimanav | XOR Properties | 15 | |
| ei15951 | Privacy-Enhanced Mail? | 25 | |
| bhalanimanav | XOR Starter | 10 | |
| brickzilla | Endless Emails | 150 | |
| bhalanimanav | Bytes and Big Integers | 10 | |
| brickzilla | Everything is Still Big | 100 | |
| St3v3 | Great Snakes | 3 | |
| bhalanimanav | Base64 | 10 | |
| M25 | Modular Arithmetic 2 | 20 | |
| gennadion | Monoprime | 30 | |
| brickzilla | Crossed Wires | 100 | |
| brickzilla | Everything is Big | 70 | |
| Akash_ | Base64 | 10 |
You are now level Current level