| Date | User | Challenge | Score |
| hungtrab | Noise Cheap | 90 | |
| Neilster | Infinite Descent | 50 | |
| million | Hex | 5 | |
| million | ASCII | 5 | |
| Noro | Base64 | 10 | |
| Noro | Hex | 5 | |
| million | Great Snakes | 3 | |
| million | Finding Flags | 2 | |
| qucker135 | Adrien's Signs | 80 | |
| wh77 | ECB Oracle | 60 | |
| tacticalHyperfix | You either know, XOR you don't | 30 | |
| resowifix | Adrien's Signs | 80 | |
| hsyn | Modular Inverting | 25 | |
| jakobl | You either know, XOR you don't | 30 | |
| cShier | Finding Flags | 2 | |
| resowifix | Chinese Remainder Theorem | 40 | |
| hsyn | Modular Arithmetic 2 | 20 | |
| MagicalCloud | Background Reading | 5 | |
| hungtrab | Missing Modulus | 80 | |
| hsyn | Modular Arithmetic 1 | 20 | |
| tacticalHyperfix | Favourite byte | 20 | |
| jakobl | Favourite byte | 20 | |
| toomuchcoffee | Export-grade | 100 | |
| mattr76 | Favourite byte | 20 | |
| tacticalHyperfix | XOR Properties | 15 | |
| thaitor | Finding Flags | 2 | |
| mattr76 | XOR Properties | 15 | |
| shravani__2 | Finding Flags | 2 | |
| abdou09 | Keyed Permutations | 5 | |
| SpicedFeather | Transparency | 50 | |
| abdou09 | Modular Arithmetic 1 | 20 | |
| Squaaaa | Finding Flags | 2 | |
| abdou09 | Extended GCD | 20 | |
| mattr76 | XOR Starter | 10 | |
| SpicedFeather | SSH Keys | 35 | |
| tacticalHyperfix | XOR Starter | 10 | |
| mattr76 | Bytes and Big Integers | 10 | |
| SpicedFeather | CERTainly not | 30 | |
| abdou09 | Greatest Common Divisor | 15 | |
| ThunderLord | Real Curve Crypto | 200 | |
| resowifix | Modular Square Root | 35 | |
| SpicedFeather | Privacy-Enhanced Mail? | 25 | |
| adamesa1 | Network Attacks | 5 | |
| duckpancakes | Factoring | 15 | |
| SpicedFeather | Modular Inverting | 25 | |
| tacticalHyperfix | Bytes and Big Integers | 10 | |
| Gerund | You either know, XOR you don't | 30 | |
| SpicedFeather | Modular Arithmetic 2 | 20 | |
| abooddev | XOR Starter | 10 | |
| SpicedFeather | Modular Arithmetic 1 | 20 |
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