| Date | User | Challenge | Score |
| toaru_k | Modular Arithmetic 1 | 20 | |
| rahasyamanava | Quadratic Residues | 25 | |
| quangntenemy | Secret Exponents | 60 | |
| pokiTS | XOR Properties | 15 | |
| ecd1e8a6i | Greatest Common Divisor | 15 | |
| toaru_k | Extended GCD | 20 | |
| aresinheaven | Checkpoint | 150 | |
| rahasyamanava | Modular Inverting | 25 | |
| ioi_ico | Finding Flags | 2 | |
| At0mxploit | Marin's Secrets | 50 | |
| YGUY | Background Reading | 5 | |
| At0mxploit | Infinite Descent | 50 | |
| deng | XOR Starter | 10 | |
| Northmatrix | SSH Keys | 35 | |
| deng | Bytes and Big Integers | 10 | |
| WilmaDFit | Hex | 5 | |
| momomansuni | Base64 | 10 | |
| At0mxploit | Endless Emails | 150 | |
| deng | Base64 | 10 | |
| mussa_Busa | Great Snakes | 3 | |
| Northmatrix | CERTainly not | 30 | |
| mwakisale | Great Snakes | 3 | |
| deng | Hex | 5 | |
| momomansuni | Hex | 5 | |
| deng | ASCII | 5 | |
| WilmaDFit | ASCII | 5 | |
| 1s0m0rph1sm | Abelian SIDH | 90 | |
| deng | Great Snakes | 3 | |
| momomansuni | ASCII | 5 | |
| deng | Finding Flags | 2 | |
| Sayge | Bringing It All Together | 50 | |
| pokiTS | XOR Starter | 10 | |
| toaru_k | Greatest Common Divisor | 15 | |
| pokiTS | Bytes and Big Integers | 10 | |
| Northmatrix | Privacy-Enhanced Mail? | 25 | |
| pokiTS | Base64 | 10 | |
| pokiTS | Hex | 5 | |
| pokiTS | ASCII | 5 | |
| linger | Bytes and Big Integers | 10 | |
| pokiTS | Great Snakes | 3 | |
| WilmaDFit | Great Snakes | 3 | |
| momomansuni | Great Snakes | 3 | |
| pokiTS | Finding Flags | 2 | |
| WilmaDFit | Finding Flags | 2 | |
| momomansuni | Finding Flags | 2 | |
| mbyte | ECB CBC WTF | 55 | |
| SUPERSUNN | No Way JOSE | 20 | |
| AstroHammy | Modular Inverting | 25 | |
| aresinheaven | Bruce Schneier's Password: Part 2 | 250 | |
| mbyte | Passwords as Keys | 50 |
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