| Date | User | Challenge | Score |
| Diffusee | Finding Flags | 2 | |
| ys512 | Bytes and Big Integers | 10 | |
| lautaroterzano | Lemur XOR | 40 | |
| kd3army | You either know, XOR you don't | 30 | |
| khyrr | Crossed Wires | 100 | |
| Kiixzoo | Network Attacks | 5 | |
| nysfatimahna | Bytes and Big Integers | 10 | |
| Jose2377 | Favourite byte | 20 | |
| kd3army | Favourite byte | 20 | |
| kd3army | XOR Properties | 15 | |
| geeneoning | Keyed Permutations | 5 | |
| grupo52026 | Modular Inverting | 25 | |
| rhernandezgar | Modular Square Root | 35 | |
| khyrr | Everything is Big | 70 | |
| inanothertime | Greatest Common Divisor | 15 | |
| ys512 | Base64 | 10 | |
| Jose2377 | XOR Properties | 15 | |
| rhernandezgar | Legendre Symbol | 35 | |
| Kiixzoo | Favourite byte | 20 | |
| M0xX | Lemur XOR | 40 | |
| Kiixzoo | XOR Properties | 15 | |
| matemorinigo | Modular Arithmetic 2 | 20 | |
| Kiixzoo | XOR Starter | 10 | |
| khyrr | Modulus Inutilis | 50 | |
| kd3army | XOR Starter | 10 | |
| Kiixzoo | Bytes and Big Integers | 10 | |
| anthack1 | Chinese Remainder Theorem | 40 | |
| ys512 | Hex | 5 | |
| anthack1 | Modular Square Root | 35 | |
| khyrr | Salty | 20 | |
| M0xX | You either know, XOR you don't | 30 | |
| aaanomy | An Exceptional Twisted Mind | 125 | |
| Kiixzoo | Hex | 5 | |
| anthack1 | Legendre Symbol | 35 | |
| Kiixzoo | ASCII | 5 | |
| anthack1 | Quadratic Residues | 25 | |
| M0xX | Favourite byte | 20 | |
| Brodyaga | XOR Starter | 10 | |
| M0xX | XOR Properties | 15 | |
| kd3army | Bytes and Big Integers | 10 | |
| mins106 | XOR Properties | 15 | |
| M0xX | XOR Starter | 10 | |
| kd3army | Base64 | 10 | |
| M0xX | Encoding Challenge | 40 | |
| Jose2377 | XOR Starter | 10 | |
| matemorinigo | Modular Arithmetic 1 | 20 | |
| kd3army | Hex | 5 | |
| heatswole | Modular Inverting | 25 | |
| ishaanharry | Transparency | 50 | |
| Brodyaga | Encoding Challenge | 40 |
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