| Date | User | Challenge | Score |
| glonk | Modular Arithmetic 2 | 20 | |
| konkod123 | Modular Arithmetic 1 | 20 | |
| glonk | Modular Arithmetic 1 | 20 | |
| Bahgutti | ASCII | 5 | |
| glonk | Extended GCD | 20 | |
| Brandongrait | Great Snakes | 3 | |
| Bahgutti | Great Snakes | 3 | |
| Bahgutti | Finding Flags | 2 | |
| glonk | Greatest Common Divisor | 15 | |
| nullex | Chinese Remainder Theorem | 40 | |
| glonk | You either know, XOR you don't | 30 | |
| yd1201 | You either know, XOR you don't | 30 | |
| yd1201 | Favourite byte | 20 | |
| Enormka | Base64 | 10 | |
| glonk | Favourite byte | 20 | |
| laalsaas | Modular Binomials | 80 | |
| miksquared | RSA or HMAC? | 35 | |
| glonk | XOR Properties | 15 | |
| moe0l | Too Many Errors | 100 | |
| Enormka | Hex | 5 | |
| yd1201 | XOR Properties | 15 | |
| AESpider | Collider | 50 | |
| viigoor | Great Snakes | 3 | |
| Brandongrait | Finding Flags | 2 | |
| Enormka | ASCII | 5 | |
| viigoor | Finding Flags | 2 | |
| securial150 | Gotta Go Fast | 40 | |
| fr1x3r | Bean Counter | 60 | |
| Enormka | Great Snakes | 3 | |
| moe0l | Twin Keys | 100 | |
| umooselukas | Finding Flags | 2 | |
| Enormka | Finding Flags | 2 | |
| glonk | XOR Starter | 10 | |
| yd1201 | XOR Starter | 10 | |
| yd1201 | Bytes and Big Integers | 10 | |
| glonk | Bytes and Big Integers | 10 | |
| glonk | Base64 | 10 | |
| glonk | Hex | 5 | |
| glonk | ASCII | 5 | |
| glonk | Great Snakes | 3 | |
| glonk | Finding Flags | 2 | |
| lcalvie | Adrien's Signs | 80 | |
| alxbq | Confusion through Substitution | 25 | |
| AESpider | Jack's Birthday Hash | 20 | |
| AESpider | Jack's Birthday Confusion | 30 | |
| yd1201 | Base64 | 10 | |
| yd1201 | Hex | 5 | |
| yd1201 | ASCII | 5 | |
| kiwisescu2004 | Base64 | 10 | |
| yd1201 | Great Snakes | 3 |
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