| Date | User | Challenge | Score |
| Vendredi | Base64 | 10 | |
| angelkat | Crossed Wires | 100 | |
| Cant_choose_name | Base64 | 10 | |
| Rodel | Curves and Logs | 40 | |
| jegadeeshssra | Hex | 5 | |
| Cant_choose_name | Hex | 5 | |
| capnolove | Bytes and Big Integers | 10 | |
| paulelpapito | XOR Properties | 15 | |
| Alexey | Hex | 5 | |
| JellyGames | Collider | 50 | |
| hamtot | Chinese Remainder Theorem | 40 | |
| uk1987 | XOR Starter | 10 | |
| Vendredi | You either know, XOR you don't | 30 | |
| hamtot | Modular Square Root | 35 | |
| Rodel | Public Keys | 15 | |
| paulelpapito | XOR Starter | 10 | |
| hamtot | Legendre Symbol | 35 | |
| At0mxploit | Lo-Hi Card Game | 120 | |
| Alexey | ASCII | 5 | |
| jegadeeshssra | ASCII | 5 | |
| Alexey | Great Snakes | 3 | |
| Blackgreen | Modular Binomials | 80 | |
| jegadeeshssra | Great Snakes | 3 | |
| Alexey | Finding Flags | 2 | |
| hamtot | Quadratic Residues | 25 | |
| hamtot | Modular Inverting | 25 | |
| hamtot | Modular Arithmetic 2 | 20 | |
| Regnm0ln1 | Export-grade | 100 | |
| hamtot | Modular Arithmetic 1 | 20 | |
| hamtot | Extended GCD | 20 | |
| hamtot | Greatest Common Divisor | 15 | |
| hamtot | You either know, XOR you don't | 30 | |
| paulelpapito | Bytes and Big Integers | 10 | |
| CryptoBro | Bytes and Big Integers | 10 | |
| JellyGames | Jack's Birthday Confusion | 30 | |
| hamtot | Favourite byte | 20 | |
| jegadeeshssra | Finding Flags | 2 | |
| hamtot | XOR Properties | 15 | |
| hamtot | XOR Starter | 10 | |
| hamtot | Bytes and Big Integers | 10 | |
| hamtot | Base64 | 10 | |
| paulelpapito | Base64 | 10 | |
| paulelpapito | Hex | 5 | |
| Rodel | Bringing It All Together | 50 | |
| hamtot | Hex | 5 | |
| paulelpapito | ASCII | 5 | |
| hamtot | ASCII | 5 | |
| paulelpapito | Great Snakes | 3 | |
| Rodel | Diffusion through Permutation | 30 | |
| hamtot | Great Snakes | 3 |
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