| Date | User | Challenge | Score |
| zagrana | Breaking SIDH | 250 | |
| CraftingNerf | Favourite byte | 20 | |
| Blank12 | XOR Properties | 15 | |
| CraftingNerf | XOR Properties | 15 | |
| Xaszz | You either know, XOR you don't | 30 | |
| Blank12 | XOR Starter | 10 | |
| mboh2 | Generators of Groups | 20 | |
| CraftingNerf | XOR Starter | 10 | |
| CraftingNerf | Bytes and Big Integers | 10 | |
| Xaszz | Favourite byte | 20 | |
| tiger844 | ASCII | 5 | |
| Sopyvu | Finding Flags | 2 | |
| unesco1232 | Finding Flags | 2 | |
| yyfsec | Chinese Remainder Theorem | 40 | |
| zagrana | Pad Thai | 80 | |
| Xaszz | XOR Properties | 15 | |
| zagrana | PriMeD5 | 100 | |
| zagrana | Everything is Still Big | 100 | |
| Blank12 | Bytes and Big Integers | 10 | |
| adnan64 | Jack's Birthday Confusion | 30 | |
| fumei15243 | Bytes and Big Integers | 10 | |
| yyfsec | Modular Square Root | 35 | |
| Kalyan_buggy | ASCII | 5 | |
| snowwit | Modular Inverting | 25 | |
| zagrana | No Random, No Bias | 120 | |
| snowwit | Modular Arithmetic 2 | 20 | |
| zagrana | Abelian SIDH | 90 | |
| zagrana | Moving Problems | 150 | |
| zagrana | The Matrix Reloaded | 100 | |
| tiger844 | Great Snakes | 3 | |
| zagrana | Paper Plane | 120 | |
| zagrana | Couples | 100 | |
| zagrana | Forbidden Fruit | 150 | |
| zagrana | RSA Signatures | 25 | |
| fumei15243 | Base64 | 10 | |
| zagrana | ProSign 3 | 100 | |
| zagrana | Endless Emails | 150 | |
| tiger844 | Finding Flags | 2 | |
| adnan64 | Jack's Birthday Hash | 20 | |
| Blank12 | Base64 | 10 | |
| ImnKan | You either know, XOR you don't | 30 | |
| fumei15243 | Hex | 5 | |
| fumei15243 | ASCII | 5 | |
| Skypace | Network Attacks | 5 | |
| yyfsec | Legendre Symbol | 35 | |
| Blank12 | Hex | 5 | |
| snowwit | Modular Arithmetic 1 | 20 | |
| syadidd | Real Eisenstein | 150 | |
| fumei15243 | Great Snakes | 3 | |
| snowwit | Extended GCD | 20 |
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