| Date | User | Challenge | Score |
| CRY_pt3r | Fast Primes | 75 | |
| 1s0m0rph1sm | Better than Linear | 85 | |
| 1s0m0rph1sm | André Encoding | 80 | |
| LashaG | Deriving Symmetric Keys | 40 | |
| henril | Legendre Symbol | 35 | |
| chen7chen | Favourite byte | 20 | |
| LashaG | Computing Shared Secrets | 30 | |
| vasyl_crypto | Structure of AES | 15 | |
| nhatluong07 | Bytes and Big Integers | 10 | |
| Oliver_isanolive | Quadratic Residues | 25 | |
| 1s0m0rph1sm | What's My Kernel | 70 | |
| aresinheaven | An Exceptional Twisted Mind | 125 | |
| msoto | Crossed Wires | 100 | |
| chen7chen | XOR Properties | 15 | |
| 1s0m0rph1sm | Let's Prove It Again | 175 | |
| PIKO9546 | Modular Inverting | 25 | |
| PIKO9546 | Modular Arithmetic 2 | 20 | |
| interrupt | Dancing Queen | 120 | |
| chen7chen | XOR Starter | 10 | |
| 1s0m0rph1sm | Mister Saplins The Prover | 125 | |
| vasyl_crypto | Keyed Permutations | 5 | |
| pugmancer | XOR Starter | 10 | |
| AstroHammy | Modular Arithmetic 2 | 20 | |
| msoto | Everything is Big | 70 | |
| AstroHammy | Modular Arithmetic 1 | 20 | |
| PIKO9546 | Modular Arithmetic 1 | 20 | |
| chen7chen | Bytes and Big Integers | 10 | |
| PIKO9546 | Extended GCD | 20 | |
| Cadaeib65 | Additive | 70 | |
| msoto | Modulus Inutilis | 50 | |
| PenTester123 | ASCII | 5 | |
| PenTester123 | Great Snakes | 3 | |
| 1s0m0rph1sm | Let's Prove It | 120 | |
| chen7chen | Base64 | 10 | |
| qslg | MDFlag | 125 | |
| PenTester123 | Finding Flags | 2 | |
| chen7chen | Hex | 5 | |
| usereilfukvjbws | XOR Starter | 10 | |
| chen7chen | ASCII | 5 | |
| arealsquirrel | Find the Lattice | 100 | |
| msoto | Salty | 20 | |
| alm | Hex | 5 | |
| msoto | Manyprime | 40 | |
| chen7chen | Great Snakes | 3 | |
| alm | ASCII | 5 | |
| alm | Great Snakes | 3 | |
| chen7chen | Finding Flags | 2 | |
| ecd1e8a6i | You either know, XOR you don't | 30 | |
| alm | Finding Flags | 2 | |
| Ahmad_cyber_007 | Network Attacks | 5 |
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